Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Erscheinungsjahr
- 2019 (443) (entfernen)
Dokumenttyp
- Vortrag (443) (entfernen)
Sprache
- Englisch (287)
- Deutsch (149)
- Mehrsprachig (6)
- Spanisch (1)
Referierte Publikation
- nein (443)
Schlagworte
- Additive Manufacturing (32)
- Korrosion (27)
- Corrosion (21)
- Additive Fertigung (15)
- Additive manufacturing (13)
- MIC (11)
- Microstructure (9)
- Thermografie (9)
- Welding (9)
- Diffraction (8)
- Magnetocaloric (8)
- Material Science (8)
- Surface functionalization (8)
- TED-GC-MS (8)
- Wasserstoff (8)
- Deckschichtbildung (7)
- In situ (7)
- Nanoparticle (7)
- Nanoparticles (7)
- Nichtrostender Stahl (7)
- Residual stress (7)
- 316L (6)
- Duplex (6)
- Energy harvesting (6)
- Fluorescence (6)
- Gelartige Elektrolyte (6)
- Glass (6)
- Hydrogen (6)
- Laser-induced periodic surface structures (LIPSS) (6)
- Methanogens (6)
- Nanocomposites (6)
- Non-destructive testing (6)
- Schweißen (6)
- Thermography (6)
- 3D printing (5)
- Applications (5)
- Atomic Force Microscopy (AFM) (5)
- Boehmite (5)
- Calibration (5)
- Computed Tomography (5)
- Computed tomography (5)
- Dye (5)
- Femtosecond laser (5)
- Hochfeste Feinkornbaustähle (5)
- Korrosionsschutz (5)
- MAG-Schweißen (5)
- NIR (5)
- Neutron Diffraction (5)
- Non-Destructive testing (5)
- Normung (5)
- Quantum dot (5)
- Rigid amorphous fraction (5)
- Archaeometry (4)
- Ceramic (4)
- Creep-resistant steel (4)
- Eigenspannungen (4)
- Femtosecond laser ablation (4)
- Friction (4)
- Ink (4)
- Kaltrisse (4)
- Korrosionsprüfung (4)
- Laser Metal Deposition (4)
- Laser implantation (4)
- Laser-induced periodic surface structures, LIPSS (4)
- Lifetime (4)
- Low Cycle Fatigue (4)
- Mechanochemistry (4)
- Microplastics (4)
- Mikroplastik (4)
- Numerical simulation (4)
- Post weld heat treatment (4)
- Pyrotechnik (4)
- Qualitätssicherung (4)
- Quantum yield (4)
- Reference materials (4)
- Residual Stress (4)
- SAXS (4)
- SLM (4)
- Synchrotron (4)
- Traceability (4)
- Wear (4)
- X-Ray Imaging (4)
- X-Ray imaging (4)
- Zerstörungsfreie Prüfung (4)
- Zink (4)
- Zinküberzüge (4)
- 3D Druck (3)
- Analytik (3)
- Atmosphärische Korrosion (3)
- Auslagerungsversuche (3)
- Bimetallkorrosion (3)
- Biodiesel (3)
- Ceramic spring (3)
- Coptic (3)
- Crack growth (3)
- Crevice corrosion (3)
- ECA (3)
- Eddy Current (3)
- Einstufung (3)
- Electron microscopy (3)
- Erstarrungsriss (3)
- FKM (3)
- Freibewitterung (3)
- GMR (3)
- HNBR (3)
- Harmonisation (3)
- IR (3)
- Implant-Test (3)
- Keyhole mode welding (3)
- KorroPad (3)
- Kunststoffe (3)
- Künstliche Bewitterung (3)
- LBM (3)
- LCF (3)
- Laser beam welding (3)
- Laserstrahlschweißen (3)
- Manuscripts (3)
- Materials Science (3)
- Materials science (3)
- Mechanical properties (3)
- Mikrostruktur (3)
- Multiplexing (3)
- NDT (3)
- Nanomaterialien (3)
- Neutron diffraction (3)
- Non-destructiv testing (3)
- Open data (3)
- Open science (3)
- Particle size distribution (3)
- Process monitoring (3)
- SWIR (3)
- Simulation (3)
- Solidification cracking (3)
- Stress relief cracking (3)
- Tensile properties (3)
- Ti-6Al-4V (3)
- TiB2 (3)
- Tunnel (3)
- Uncertainty (3)
- Water content (3)
- X-ray computed tomography (3)
- X-ray scattering (3)
- XRD (3)
- Zugeigenschaften (3)
- AISI D2 (2)
- AKR (2)
- AM (2)
- Absolute fluorometry (2)
- Acoustic levitation (2)
- Additive Manufacturing (AM) (2)
- Ageing (2)
- Altern (2)
- Aluminium (2)
- Analytische Zentrifuge (2)
- Anisotropy (2)
- Arabic Recipes (2)
- Archaea (2)
- Armaturenprüfung (2)
- Assay (2)
- Austenitic stainless steels (2)
- BDS (2)
- Bead (2)
- Beständigkeit (2)
- Beständigkeitsbewertungen (2)
- Biofilmbildung (2)
- Brexit (2)
- CAT-Technologie (2)
- CLP (2)
- CLP-Verordnung (2)
- CT (2)
- Carbon steel (2)
- Cement (2)
- Ceramics (2)
- Chemical composition (2)
- Chemikalienrecht (2)
- Cleavable probe (2)
- Compatibility (2)
- Compatibility evaluations (2)
- Composites (2)
- Copolymer (2)
- Copper (2)
- Corrosion monitoring (2)
- Cultural heritage (2)
- DCB (2)
- Deposition welding (2)
- Desinfection (2)
- Diffusion (2)
- Digitalization (2)
- Diopside (2)
- Direct energy deposition (2)
- Distributed fibre optic sensing (2)
- Drinking (2)
- Duplexstahl (2)
- Durability (2)
- EPDM (2)
- EPMA (2)
- EPR (2)
- Electromagnetic Weld Pool Support (2)
- Elektrochemie (2)
- Encoding (2)
- Environmental Simulation (2)
- Explosivstoffe (2)
- FAME (2)
- Fatigue (2)
- Flow cytometry (2)
- Fräsen (2)
- Full Penetration (2)
- Full-Notch Creep Test (FNCT) (2)
- GFK (2)
- GHS (2)
- Gefahrgut (2)
- Gefahrstoff (2)
- Gefährliche Stoffe (2)
- Geothermal (2)
- Glass transition (2)
- HI-Tension (2)
- Haftfestigkeit (2)
- Heizöl (2)
- Heißriss (2)
- High-strength steel (2)
- Highspeed-plasma-laser-cladding (2)
- Hybrid Laser Arc Welding (2)
- Hybrid composite pressure vessel (2)
- Hydrogen-assisted cracking (2)
- In situ Monitoring (2)
- In situ measurement (2)
- Inks (2)
- Innenhydrophobierung (2)
- Integrating sphere spectroscopy (2)
- Kennzeichnung (2)
- L-PBF (2)
- LIBS TIG welding (2)
- LPA (2)
- LTT (2)
- Laser Beam Welding (2)
- Laser Powder Bed Fusion (2)
- Laser Powder Bed Fusion (L-PBF) (2)
- Laser Pulver Auftragsschweißen (2)
- Laser-induced X-ray emission (2)
- Laserschutz (2)
- Layer formation (2)
- Layerwise (2)
- Lean Duplex (2)
- Lochkorrosion (2)
- MVT (2)
- Marktüberwachung (2)
- Material science (2)
- Materialbearbeitung (2)
- Metallene Werkstoffe (2)
- Metallische Materialien (2)
- Metals (2)
- Method (2)
- Microbiologically influenced corrosion (2)
- Modeling (2)
- Moisture clog (2)
- Monte Carlo (2)
- Nano (2)
- Nanocharacterisation (2)
- Nanomaterial (2)
- Nanoplastics (2)
- Nanostructure (2)
- Nichtmetallische Materialien (2)
- Non destructive analytical techniques (2)
- Orientation (2)
- Oxidation (2)
- Passivität (2)
- Phase transformation (2)
- Photoluminescence (2)
- Physikalische Gefahren (2)
- Pitting (2)
- Polyaniline (2)
- Polymer (2)
- Polymer matrix composites (2)
- Polymers (2)
- Polymers of intrinsic microporosity (2)
- Powder (2)
- Prozesskette (2)
- Prüfmethode (2)
- Prüfmethoden (2)
- Prüfverfahren (2)
- Pufferschichten (2)
- Pyrotechnics (2)
- Quality assurance (2)
- Quantum dots (2)
- Radiation protection (2)
- Research data management (2)
- Residual stresses (2)
- Ringversuch (2)
- Röntgenemission (2)
- Röntgenrefraktion (2)
- Sauerstoff (2)
- Schadensanalyse (2)
- Schleifen (2)
- Schwingfestigkeit (2)
- Sekundärstrahlung (2)
- Sensibilisierung (2)
- Sensor (2)
- Shore hardness (2)
- Sicherheitstechnische Bewertung (2)
- Slurry (2)
- Small-angle X-ray scattering (2)
- Spectroscopy (2)
- Stainless Steel (2)
- Standardisation (2)
- Structural health monitoring (2)
- Sulfate reducing bacteria (2)
- Surface texturing (2)
- TMDSC (2)
- Thick Materials (2)
- Thin films (2)
- Ti64 (2)
- TiAl5V4 (2)
- Titan (2)
- Tribology (2)
- UN-GHS (2)
- Ultrakurze Laserpulse (2)
- Ultraschallunterstütztes Zerspanen (2)
- Ultrashort laser material interaction (2)
- VAMAS (2)
- Validierung (2)
- Water (2)
- Weld metal (2)
- Weld pool shape (2)
- Wärmeführung (2)
- X-ray refraction (2)
- X-ray refraction techniques (2)
- Zero-g (2)
- Zerspanbarkeitsanalysen (2)
- Zinc coatings (2)
- additive manufacturing (2)
- corrosion (2)
- µ-gravity (2)
- Überzüge (2)
- 1D-Simulation (1)
- 1H-NMR (1)
- 3D inspection (1)
- 3D-Printing (1)
- 3d structuring (1)
- ACM (1)
- AFM (1)
- AFM based test methods (1)
- AFM-IR (1)
- AFM-Kraft-Abstand-Kurven (1)
- AGIL (1)
- AIS (1)
- AISI 316L (1)
- AKR-Betonversuche (1)
- AM IN718 alloy (1)
- Absorption edge tomography (1)
- Abtragende Glasbearbeitung (1)
- Acoustic Emission (1)
- Acoustic emission analysis (1)
- Activation energy (1)
- AdCo Explosives (1)
- Additiv (1)
- Adhesive joint (1)
- Adhäsion (1)
- Adsorbed layer (1)
- Advanced Materials (1)
- Advanced high strength steel (1)
- Advanced materials (1)
- Aerosol measurements (1)
- Ageing behaviour (1)
- Aktive Thermographie (1)
- Alite (1)
- Alkali-Kieselsäure Reaktion (1)
- Alkali-silica reaction (1)
- Alterung (1)
- Aluminiumlegierungen (1)
- Aluminum alloy (1)
- Anisotropy estimate (1)
- Approval (1)
- Arabic recipes (1)
- Arbitrary trajectories (1)
- Arrhenius (1)
- Artungleiche Werkstoffe (1)
- Atemluftflasche (1)
- Atemschutz (1)
- AuNP (1)
- Auftragschweißen (1)
- Autocorrelation (1)
- Automobilindustrie (1)
- BAM-Liste (1)
- BAMline (1)
- Barcoding (1)
- Baumusterprüfungen (1)
- Bauteilprüfung (1)
- Bead-based assay (1)
- Beamline (1)
- Benannte Stellen (1)
- Beschichtung (1)
- Bestimmung der Messunsicherheit (1)
- Beständigkeit in Biokraftstoffen (1)
- Beständigkeitsbewertung (1)
- Betonfahrbahn (1)
- Bio-based concrete (1)
- Bioceramics (1)
- Biogene Brennstoffe (1)
- Black Ink (1)
- Blähen (1)
- Boundary element method (1)
- Breakdown strength (1)
- Brechungsindex (1)
- Bruchflächenanalyse (1)
- Bruchmechanik (1)
- Bulge (1)
- Bulging (1)
- Bundesoberbehörden (1)
- Böden (1)
- Böhmit (1)
- C3A (1)
- C3S (1)
- CCS (1)
- CCU (1)
- CE-ICP-MS (1)
- CFK (1)
- CFRP (1)
- CO2 (1)
- COD-AGE (1)
- Cable (1)
- Calcium peroxid (1)
- Capture (1)
- Carbon (1)
- Carbon Capture, Utilization and Storage (CCUS) (1)
- Carbon capture (1)
- Centrifugal Adhesion Testing (1)
- Centrifugal Adhesion Testing (CAT) (1)
- Centrifugal Force (1)
- Certification Standard 22 (1)
- Certified reference materials (1)
- Chaboche model (1)
- Chemical admixtures (1)
- Chemisch instabile Gase (1)
- Chemo-mechanical coupling (1)
- Chloridbelastete Stahlbetonbauwerke (1)
- Circumferential welds (1)
- Coal dust (1)
- Coating (1)
- Codicology (1)
- Cohesive Elements (1)
- Composite (1)
- Composite pressure vessel (1)
- Composite-Druckgefäß (1)
- Compression set (1)
- Compressive Cyclic loading (1)
- Compressive Stress (1)
- Computed tomography (CT) (1)
- Computertomographie (1)
- Concrete bridges (1)
- Concrete motorway pavements (1)
- Condensation (1)
- Conductometry (1)
- Contact resonance (1)
- Content of calcium peroxide (1)
- Convection coefficient (1)
- Cordierite (1)
- Corrosion product (1)
- Corrosion products (1)
- Corrosion testing (1)
- Coupled corrosive and mechanial load (1)
- Coupled corrosive/mechanical load (1)
- Crack Propagation (1)
- Crack propagation (1)
- Creep (1)
- Crevice (1)
- Crosslinking (1)
- Cryogenic Engineering (1)
- Crystal Plasticity Modelling (1)
- Crystal plasticity (1)
- Crystallization (1)
- Curing (1)
- Curved surfaces (1)
- Cyclic R-curve (1)
- DIN 50929-3 (1)
- DIN EN 16516 (1)
- DIN EN 717-1 (1)
- Damage tolerant component design (1)
- Dangerous Goods (1)
- Data fusion (1)
- Data processing (1)
- Data storage (1)
- Database (1)
- Dauerhaftigkeit (1)
- Deckschichten (1)
- Declarations of conformity (1)
- Deep learning (1)
- Defect detection (1)
- Defekte Eigenspannung (1)
- Defokussierung (1)
- Deformation behavior (1)
- Degradation (1)
- Dehnungsfehler (1)
- Delayed addition (1)
- Denkmalpflege (1)
- Desiccation (1)
- Dichtungswerkstoffe (1)
- Dielectric strength (1)
- Diesel (1)
- Digital (1)
- Digital twin (1)
- Digitalisierung (1)
- Dilatometry (1)
- Direct Energy Deposition (1)
- Direct Laser Metal Deposition (1)
- Dislocations (1)
- Distributed humidity sensor (1)
- Distributed sensor (1)
- Dosimetry (1)
- Drop test (1)
- Droplet corrosion (1)
- Druckbehältern (1)
- Dual-energy (1)
- Dye labeling (1)
- Dynamic mechanical analysis (1)
- Dynamisch Mechanische Analyse (1)
- Dünne Schichten (1)
- E10 (Kraftstoff mit bis zu 10% Ethanol) (1)
- EASA (1)
- EMPIR (1)
- Early hydration (1)
- Early oxidation (1)
- Eddy current testing (1)
- Eexisting structures (1)
- Einstufungskriterien (1)
- Elastic Constants (1)
- Elastic constants (1)
- Elastomerdichtung (1)
- Elastomere (1)
- Electrochemical impedance spectroscopy (1)
- Electromagnetic radiation (1)
- Electromagnetic scattering (1)
- Electromagnetic weld pool support (1)
- Electronic Detonators (1)
- Electrospun fibers (1)
- Elektromagnetsiche Schmelzbadbeeinflussung (1)
- Elektronische Zündesysteme (1)
- Elemenet transport (1)
- Element transport (1)
- Ellipsometric porosimetry (1)
- Ellipsometrie (1)
- Ellipsometry (1)
- Emerging technologies (1)
- Emissionsprüfkammer (1)
- End crater (1)
- End-crater (1)
- Endkrater (1)
- Energiedissipation im Kontakt (1)
- Engineering applications (1)
- Environment (1)
- Environmental Stress Cracking (ESC) (1)
- Environmental simulation (1)
- Environmental stress cracking (1)
- Epoxy (1)
- Epoxy-Anhydrid Duroplast (1)
- Erdboden (1)
- Ermüdung (1)
- Explosionsartiges Abplatzen (1)
- Explosionsgrenzen (1)
- Explosionsschutz (1)
- Explosivplattieren (1)
- Explosivstoofe (1)
- Extensometer (1)
- Extracellualr vesicles (1)
- FT-IR (1)
- Failure test (1)
- Faser-Kunststoff-Verbunde (1)
- Faserkunststoffverbunde (1)
- Faserverbund (1)
- Faserverbundwerkstoff (1)
- Fast scanning calorimeter (1)
- Fast scanning calorimetry (1)
- Fatigue Crack Propagation (1)
- Fatigue Life Evaluation (1)
- FeCr- alloys (1)
- Fiber reinforced polymer (1)
- Filtered back projection (1)
- Filters (1)
- Fine Powder (1)
- Finite elements (1)
- Fire damp (1)
- Flame retardant (1)
- Flammability (1)
- Flash DSC (1)
- Flow-system (1)
- Flowability (1)
- Fluorescence standard (1)
- Foaming (1)
- Focused Ion Beam (1)
- Force distance curve (1)
- Force-distance diagram (1)
- Formaldehyd (1)
- Forschungsdatenmanagement (1)
- Forschungsstrategie (1)
- Fractography (1)
- Fracture surface analysis (1)
- Fragmentation (1)
- Freeze Drying (1)
- Frequenzanalyse (1)
- Fume (1)
- Fügetechnologie (1)
- GTN model (1)
- Gallium doping (1)
- Gas analytic (1)
- Geant4 (1)
- Gefahrenklasse (1)
- Gefahrstoffverordnung (1)
- Gel-type electrolytes (1)
- Gelelektrolyte (1)
- Gesteinskorrosion (1)
- Glas (1)
- Glass powder (1)
- Glass scanning (1)
- Glass screening device (1)
- Glue (1)
- Grenzfläche als Material (1)
- Grünfolieneigenschaften (1)
- HAZPRED (1)
- HDPE Soprption (1)
- HPC (1)
- HVO (1)
- Hamonisierung (1)
- Hard machining (1)
- Harmonised Standards (1)
- Heat conduction (1)
- Heating oil (1)
- Heating oil - biodiesel - blend (1)
- Heating oil with 10% biodiesel (1)
- Heating oil with 20% biodiesel (1)
- Heating oil-Biodiesel-Blend (1)
- Heissrisse (1)
- Heizöl mit 10% Biodiesel (1)
- Heizöl mit 20 % Biodiesel (1)
- Heizöl mit 20% Biodiesel (B20) (1)
- Heizöl-FAME-Blends (1)
- Heißgaskorrosion (1)
- Heißrisse (1)
- High Temperature Testing (1)
- High entropy alloys (1)
- High temperature (1)
- High temperature corrosion (1)
- High-entropy alloys (1)
- High-performance concrete (1)
- High-power laser beam (1)
- High-strength concrete (1)
- High-strength steels (1)
- High-temperature corrosion (1)
- Highspeed plasma (1)
- Hochentropielegierungen (1)
- Hot Cracking (1)
- Hot cracking (1)
- Hot steam (1)
- Hybrid laser-arc welding (1)
- Hybride Gemische (1)
- Hybrider Werkstoffverbunde (1)
- Hydrogen Embrittlement (1)
- Hydrogen methane (1)
- Höherfester Feinkornbaustahl (1)
- IAEA fire (1)
- ICP-MS (1)
- IIT (1)
- IN 718 (1)
- ISO (1)
- ISO 14577 (1)
- ImAFM (1)
- Implant test (1)
- Implant-test (1)
- Implants (1)
- InP (1)
- Indium phosphide (1)
- Indonesien (1)
- Infrared Thermography (1)
- Infrared thermography (1)
- Ink terminology (1)
- Institut Laue Langevin (1)
- Instrumented Indentation Testing (1)
- Instrumentierte Eindringprüfung (1)
- Instrumentierte Eindringprüfung (IIT) (1)
- Integrating sphere spectroscopy, (1)
- Inter-laboratory comparison (1)
- Interdisciplinary (1)
- Interfaces (1)
- Internal friction (1)
- Introduction (1)
- Inverse Problems (1)
- Iron isotope fractionation (1)
- Kabeltrenner (1)
- Kathodische Korrosionsschutz (1)
- Kavitation (1)
- Keramische Folien (1)
- Keyhole mode laser beam welding (1)
- Kieselsol (1)
- Kleb- und Haftfestigkeit (1)
- Klebeverbindungen (1)
- Klebfestigkeit (1)
- Kleinprobenprüfung (1)
- Konformitätsbewertung (1)
- Konformitätserklärung (1)
- Kontaktkorrosion (1)
- Korosi (1)
- Korrosionsschnelltest (1)
- Korrosionsschäden (1)
- Korrosionsuntersuchungen (1)
- Korrosionsüberwachung (1)
- Kraftstoffabbau (1)
- Kraftstoffbehälter (1)
- Kriechen (1)
- Kriechverhalten (1)
- Kristallisation (1)
- Kunststoff (1)
- Kunststoff und Röntgen-Rückstreuung (1)
- Kurz- und Langriss-Ermüdungsbruchmechanik (1)
- Kurzrisswachstum (1)
- Kältemittel (1)
- LC / MALDI-TOF-MS coupling (1)
- LC x ESI-TOF-MS (1)
- LC-MS (1)
- LCCC (1)
- LIMS (1)
- LLG (1)
- LME (1)
- LPBF (1)
- LT-FCM (1)
- LTT filler material (1)
- Labelling (1)
- Lack-of-fusion (1)
- Lamb waves (1)
- Laminography (1)
- Lanthanide (1)
- Large-scale test (1)
- Laser (1)
- Laser Powder Bed Melting (1)
- Laser Scanning Microscopy (LSM) (1)
- Laser cladding (1)
- Laser dispersing (1)
- Laser hybrid welding (1)
- Laser metal deposition (1)
- Laser surface texturing (1)
- Laserauftragschweißen (1)
- Laserbearbeitung (1)
- Laserhybridschweißen (1)
- Laserscanningmikroskopie (LSM) (1)
- Laserstrahlhybridschweißen (1)
- Laserstrahlschmelzen im Pulverbett (1)
- Layer system (1)
- Layerwise Slurry Deposition (1)
- Layerwise slurry deposition (1)
- Leather (1)
- Lebensdauer (1)
- Lebensdauerversuche (1)
- Leichtbau (1)
- Levitation (1)
- Liquid Crystals (1)
- Load partition (1)
- Localised corrosion (1)
- Low Transformation Temperature (1)
- Lubricants (1)
- Lubrication (1)
- MCS (1)
- MEMUS (1)
- MHD (1)
- MOF (1)
- Magnetic field (1)
- Magnetic nanoparticle (1)
- Magnetocoloric (1)
- Magnetohydrodynamics (1)
- Maintenance (1)
- Manual of Tests and Criteria (1)
- Market surveillance (1)
- Martensite (1)
- Mass spectrometry (1)
- Mass spectrometry of polymers (1)
- Material characterization (1)
- Measurement (1)
- Mechanical behavior (1)
- Mechanical strength (1)
- Mehrprobenprüfung (1)
- Mesoporous iridium-titanium mixed oxides (1)
- Mesoporous mixed metal oxide films (1)
- Messing (1)
- Messtechnik (1)
- Messunsicherheit (1)
- Metal Matrix Composite (1)
- Metal matrix composite (1)
- Metal reducing bacteria (1)
- Metal-organic-frameworks (1)
- Metalldichtung (1)
- Metallic seal (1)
- Metallkorrosion (1)
- Metalls (1)
- Metal–organic frameworks (1)
- Methane (1)
- Method comparison (1)
- Method validation (1)
- Methos comparision (1)
- Microanalysis (1)
- Microbeam analysis (1)
- Microbial (1)
- Microbially induced corrosion (1)
- Microcracking (1)
- Microdosimetry (1)
- Microhardness (1)
- Micromagnetism (1)
- Microparticle (1)
- Microstructural analysis (1)
- Microstructure Characterization (1)
- Microstructure characterisation (1)
- Microstructure evolution (1)
- Mikroskaliert (1)
- Mixed Ca-K-Na phosphates (1)
- Modelling (1)
- Modified Varestraint-/Transvarestraint test (1)
- Module (1)
- Moisture transport (1)
- Molecular masses (1)
- Molten pool dynamics (1)
- Monitoring (1)
- Monte-Carlo simulation (1)
- Mortel (1)
- Mueller-Matrix Ellipsometry (1)
- Mueller-Matrix imaging ellipsometry (1)
- Multi-layered system (1)
- Multiphoton laser structuring (1)
- Müller-Matrix-Ellipsometrie (1)
- NMR (1)
- Na and K rhenanites (1)
- Nano particle (1)
- Nano screening (1)
- NanoSIMS (1)
- Nanocomposite (1)
- Nanocrystal (1)
- Nanokomposit (1)
- Nanorods (1)
- Nanoscale (1)
- Nanoskaliert (1)
- Nanostructure quantification (1)
- Nanotechnologie (1)
- Neuartige Materialien (1)
- Neutronen Abschirmmaterial (1)
- Neutronenradiographie (1)
- Neutronentomographie (1)
- New standards (1)
- Next Generation Sequencing (1)
- Ni-Resist (1)
- NiCrBSi (1)
- Nicht-lineare Regression (1)
- Niedrigenergie-Polymeren (1)
- Non destructive testing (1)
- Non-destructuve testing (1)
- Non-spherical shape (1)
- Nondestructive testing (1)
- Normen (1)
- Notified bodies (1)
- Numerische Simulation (1)
- OOMMF (1)
- OTDR (1)
- Oberflächenanalytik (1)
- Oberflächengeometrie (1)
- Oberflächenmesstechnik (1)
- Oberflächenpotential (1)
- Oberflächensteifigkeit (1)
- Oberflächentechnik (1)
- On-site mixed Explosives (1)
- Ooxidation (1)
- Optical Tomography (1)
- Optical assay (1)
- Optical emission spectroscopy (1)
- Optical fiber sensor (1)
- Optical spectroscopy (1)
- Optical tomography (1)
- Optische Fasern (1)
- Optische Tomografie (1)
- Organic peroxides (1)
- Outokumpu: Stainless steel (1)
- Oxygen evolution reaction (1)
- PC characterisation (1)
- PEG (1)
- PMMA (1)
- PUR (1)
- Package (1)
- Package testing (1)
- Paint (1)
- Papyrus (1)
- Parchment (1)
- Partial penetration (1)
- Partial penetration laser hybrid welding (1)
- Particle gas emission (1)
- Particle size (1)
- Partikelgrößenverteilung (1)
- Passivschicht (1)
- Peptide Library (1)
- Peptides (1)
- Performance test (1)
- Performance validation (1)
- Periodic inspections (1)
- Permitted explosives (1)
- Phage Display (1)
- Phase diagram (1)
- Phase transformations (1)
- Phase-field simulation (1)
- Phasenumwandlung (1)
- Phononische Kristalle (1)
- Photon counting detector (1)
- Photoresist (1)
- Pipeline steel X120 (1)
- Plasma (1)
- Plasma-Transferred-Arc (1)
- Plastic (1)
- Plastikstrategie (1)
- Plume (1)
- Polyamid 12 (1)
- Polyamide 12 (1)
- Polycarboxylate ether (PCE) (1)
- Polyethylen hoher Dichte (1)
- Polyethylene Glycol (1)
- Polyethylene, PE-HD (1)
- Polymer aging (1)
- Polymer blends (1)
- Polymer composites (1)
- Polymer materials (1)
- Polymer nanocomposites (1)
- Polymer optical fiber (1)
- Polymere (1)
- Polymere Werkstoffe (1)
- Polymeric materials (1)
- Polysaccharides (1)
- Polyurethane (1)
- Pores (1)
- Porosität (1)
- Porous ceramics (1)
- Potential (1)
- Practical aspects (1)
- Pre-standardisation (1)
- Presshärten (1)
- Pressverbindung (1)
- Primär- und Sekundärspannungen (1)
- Probengrößeneffekt (1)
- Projection matrix (1)
- Propane gas fire test facility (1)
- Protein (1)
- Prozessmonitoring (1)
- Prozessüberwachung (1)
- Prüftechnik (1)
- QSPR (1)
- Quality assurcance (1)
- Quantum yields (1)
- REACH (1)
- RME (1)
- RRT (1)
- RSW (1)
- Radioactive NP (1)
- Radioactive material (1)
- Radioactive sources (1)
- Raman microscopy (1)
- Raman spectroscopy (1)
- Rayleigh scattering (1)
- Reconstructed ion chromatograms (1)
- Recycling (1)
- Recycling-by-design (1)
- Reference material (1)
- Reference methods (1)
- Refraction (1)
- Reheat cracking (1)
- Representative material properties (1)
- Repräsentative Werkstoffeigenschaften (1)
- Residual Stresses (1)
- Residual stress analysis (1)
- Restlebensdauer (1)
- Restoration and conservation (1)
- Restraint (1)
- Rheology (1)
- Rietveld (1)
- Rissarrest (1)
- Rissbildung in Stahl (1)
- Risstrajektorie (1)
- Rotorblatt (1)
- Round robin tests (1)
- Round-Robin-Tests (1)
- Rubber seal (1)
- Rundnaht (1)
- Rundnähte (1)
- Röntgenbeugung (1)
- Rührreibschweißen (1)
- SBFEM (1)
- SEC (1)
- SEM/EDS/STRATAGem (1)
- SKPM (1)
- SRB (1)
- Sailplane Development Panel (1)
- Sample preparation (1)
- Scale-bridging (1)
- Scaled Boundary FEM (1)
- Scanning Electron Microscopy (SEM) (1)
- Scanning electron microscopy (1)
- Schadenstolerante Bauteilauslegung (1)
- Schallemission (1)
- Schallemissionsprüfung (1)
- Schallemmission (1)
- Schallerzeuger (1)
- Schmiermittel (1)
- Schweißeigenspannungen (1)
- Schweißeigenspannungs-Tiefen-Profile (1)
- Schädigung (1)
- Schädigungsverhalten (1)
- Screening (1)
- Seal performance (1)
- Security (1)
- Segmentation (1)
- Selective Laser Melting (SLM) (1)
- Selective Laser Sintering (SLS) (1)
- Selective laser melting (1)
- Selektives Lasersintern (1)
- Self-reactive substances (1)
- Semiconductor (1)
- Semiconductor materials (1)
- Sensoren (1)
- Shore Hardness (1)
- Shore-Härte (1)
- Sicherer Betrieb (1)
- Sicherheitsdatenblatt (1)
- Sicherheitstechnische Kenngrößen (1)
- Silane (1)
- Silicon Carbide (1)
- SimCoLas (1)
- Single cell-ICP-ToF-MS (1)
- Single particle spectroscopy (1)
- Single particle-ICP-ToF-MS (1)
- Sintering (1)
- Sintern (1)
- Size distribution (1)
- Sliding wear (1)
- Slow Crack Growth (SCG) (1)
- Slow crack growth (1)
- Small Angle Neutron Scattering (1)
- Soda-lime silicate glass (1)
- Soda-lime-silica glass (1)
- Software (1)
- Soil (1)
- Solidification Cracking (1)
- Spaltkorrosion (1)
- Spannungsrelaxationsrisse (1)
- Spannungsriss (1)
- Spannungsrisskorrosion (1)
- Spatter (1)
- Speciation analysis (1)
- Spectroscopic Imaging (1)
- Spectroscopic ellipsometry (1)
- Spectroskopic Imaging (1)
- Spektrale Ellipsometrie (SE) (1)
- Spring constant (1)
- Spring constant (1)
- Stabilität von Eigenspannungen (1)
- Stahl und Aluminium (1)
- Stained glass (1)
- Stainless (1)
- Stand der Normung (1)
- Standardization (1)
- Standards (1)
- Stanzen (1)
- Steel (1)
- Storage (1)
- Stress analysis (1)
- Structural anomalies (1)
- Structural inhomogenities (1)
- Structural integrity (1)
- Structural safety (1)
- Structure-property relationship (1)
- Structured light scanning (1)
- Sulfidation (1)
- Superalloy (1)
- Supercritical/dense phase CO2 (1)
- Superelliptic Lamé curves (1)
- Supermartensit (1)
- Surface analysis (1)
- Surface chemistry (1)
- Surface crystallization (1)
- Surface group (1)
- Surface group analysis (1)
- Surface modification (1)
- Surfaces (1)
- Synchrotron Energy Dispersive Diffraction (1)
- Synchrotron Röntgen Refraktion (1)
- Synchrotron X-ray tomography (1)
- Synchrotron radiation (1)
- Synchrotron tomography (1)
- Synthetic air (1)
- TEKKEN-Test (1)
- TMF (1)
- Tanning (1)
- Tara Mediterranee (1)
- Tausalzeintrag (1)
- Technical Specification (1)
- Technological innovation (1)
- Temperaturschwankungen (1)
- Tensile Properties (1)
- Tensile Stress (1)
- Tensile testing (1)
- Testing method (1)
- Themral cycles (1)
- Thermal degradation (1)
- Thermal testing (1)
- Thermal treatment (1)
- Thermische Belastung (1)
- Thermische Betriebsbelastungen (1)
- Thermograhy (1)
- Thermogravimetry (1)
- Thermomechanik (1)
- Thermoplastic polyurethane (1)
- Thick-walled steels (1)
- Thin polymer films (1)
- Thin polymeric films (1)
- Time-resolved flow cytometry (1)
- Time-temperature superposition (1)
- Titanium (1)
- Tool steel (1)
- Toughness (1)
- Transmission electron microscopy (1)
- Transport und Lagerung von Chemikalien (1)
- Tribofilm (1)
- Tribologie (1)
- Tribologische Datenbank (1)
- Tribologsches Charakterisierungsdienste (1)
- Trinkwasserinstalltion (1)
- Tuff (1)
- Tungsten carbide (1)
- Tunnelatmosphöre (1)
- UHPC (1)
- UN-Test O.3 (1)
- UV degradation (1)
- UV-Bestrahlungsstärke (1)
- Ultrafast scattering (1)
- Ultraschallsensor (1)
- Ultraschallwellen (1)
- Ultrasonic testing (1)
- Upconversion (1)
- Utilization (1)
- Utilization, and storage (CCUS) technology (1)
- VSSA (1)
- Vacuum hot extraction (1)
- Varestraint (1)
- Verbundfestigkeit (1)
- Verifizierung (1)
- Verwitterung (1)
- Virtual experiments (1)
- Viscoplasticity (1)
- Viskosität (1)
- Vorgehensweise (1)
- Warmfester Stahl (1)
- Wartung (1)
- Wasserstoffspeicher (1)
- Water speciation (1)
- Wear resistance (1)
- Weathering resistance (1)
- Weißlichtinterferenzmikroskopie (WLIM, 3D) (1)
- Weld pool behavior (1)
- Weld pool shape approximation (1)
- Werkstoffauswahl (1)
- Werkstoffe (1)
- Werkstoffprüfung (1)
- Wiederkehrende Prüfung (1)
- Wind energy (1)
- Wirbelstrom (1)
- Wirbelstromprüfung (1)
- Wirbesltrom (1)
- Wood materials (1)
- X-ray CT (1)
- X-ray and electron diffraction (1)
- X-ray imaging (1)
- X-ray spectroscopic techniques (1)
- X-ray spectroscopy (1)
- X-ray-CT (1)
- X38CrMoV5-3 (1)
- XANES (1)
- Young's modulus (1)
- ZfP (1)
- Zinc (1)
- Zinc coated steel (1)
- Zinkdeckschichten (1)
- Zirconia (1)
- Zonation (1)
- Zugprüfungen (1)
- Zugversuch (1)
- Zündenergie (1)
- Zündquellen (1)
- abtragende Glasbearbeitung (1)
- alumina (1)
- arbon capture (1)
- attraktive Wechelwirkung (1)
- carbon steel (1)
- ceramics (1)
- condensate (1)
- copper (1)
- degradation (1)
- dielectric spectroscopy (1)
- electrochemical characterization (1)
- ethylene vinyl acetate (1)
- fatigue crack growth (1)
- gas separation membranes (1)
- geothermal energy (1)
- i-Tribomat (1)
- impurities (1)
- leakage (1)
- mechanical properties (1)
- microstructure analysis (1)
- molecular mobility (1)
- nanoindentation (1)
- performance test (1)
- pitting corrosion (1)
- polymers (1)
- polymers of intrinsic microporosity (1)
- polynorbornenes (1)
- product specification (1)
- rubber (1)
- selective laser melting (1)
- single cell-ICP-ToF-MS (1)
- single particle-ICP-ToF-MS (1)
- steel (1)
- uncertainty (1)
- utilization, and storage (CCUS) technology (1)
- volume resistivity (1)
- Überlappbereich (1)
- μCT (1)
Organisationseinheit der BAM
- 9 Komponentensicherheit (105)
- 6 Materialchemie (95)
- 8 Zerstörungsfreie Prüfung (82)
- 7 Bauwerkssicherheit (79)
- 5 Werkstofftechnik (64)
- 7.6 Korrosion und Korrosionsschutz (57)
- 9.3 Schweißtechnische Fertigungsverfahren (52)
- 8.5 Röntgenbildgebung (42)
- 9.4 Integrität von Schweißverbindungen (39)
- 8.0 Abteilungsleitung und andere (31)
Eingeladener Vortrag
- nein (443)
Polyethylen hoher Dichte (PE-HD) wird als Werkstoff für Rohre und Behälter für den Transport und zur Lagerung von Gefahrgütern verwendet. Für die Beurteilung und technische Freigabe dieser Materialien ist insbesondere das Verständnis des Schädigungsmechanismus des langsamen, umgebungsbedingten Spannungsrisses (engl.: „environmental stress cracking“, ESC) essentiell. ESC tritt bei relativ geringen auf einen Werkstoff einwirkenden mechanischen Spannungen auf. An lokalen Fehlstellen (z.B. Defekte, Inhomogenitäten, Kerben) beginnend wächst ein Riss langsam durch das Material und führt nach gewisser Zeit zu einem charakteristischen, pseudo-spröden Bruch. Dabei wird das Risswachstum durch äußere Medieneinwirkung zusätzlich entscheidend beeinflusst. Dieses langsame Risswachstum wird als Hauptursache für das plötzliche und unerwartete Versagen von Polymerwerkstoffen angesehen.
Eine etablierte Prüfmethode zur Bewertung des Materialverhaltens gegenüber dieses Schädigungsmechanismus ist der Full-Notch Creep Test (FNCT), der für PE-HD Behältermaterialien üblicherweise unter Verwendung von wässrigen Netzmittellösungen (Arkopal N 100) durchgeführt wird. Die aus dem FNCT erhaltene Standzeit dient dabei als Bewertungskriterium für verschiedene PE-HD-Werkstoffe. In einer Studie wurden neben einer typischen Arkopal-N-100-Netzmittellösung praktisch relevante, organische Flüssigkeiten wie Biodiesel und Diesel als Testmedien verwendet, um deren Einfluss auf das ESC-Verhalten von PE-HD-Behältermaterialien zu charakterisieren. Neben der klassischen Standzeit-Auswertung erfolgte eine erweiterte Bruchflächenanalyse mittels Licht- (LM), Laserscanning- (LSM) und Rasterelektronenmikroskopie (REM). Insbesondere die LSM erlaubt eine schnelle und einfache Unterscheidung pseudo-spröder und duktiler Bruchbilder, die zur Beurteilung der Repräsentativität des FNCT für das dem Spannungsriss zugrundeliegenden langsamen Risswachstum von Bedeutung ist.
During their lifetime, polymer components subjected to mechanical loads and environmental influences show a loss of their mechanical properties required for their specific applications. In this respect, the craze-crack damage mechanism slow crack growth (SCG) is relevant for PE-HD components used in high-performance applications such as pipes and containers for the storage and transport of dangerous goods. SCG is considered to be the major failure mechanism in polyolefins and it typically occurs suddenly and unexpectedly. Due to the fields of application, SCG is a safety relevant issue. To test for the resistance of PE-HD pipe and container materials against SCG, the full-notch creep test (FNCT) is widely applied in Europe. In this study, SCG phenomena in PE-HD are investigated in detail based on an improved FNCT, especially including the consideration of the influence of environmental liquids effecting the damage mechanism. Using an enhanced fracture surface and a crack propagation analysis with imaging techniques such as light microscopy (LM), laser scanning microscopy (LSM), X-ray computed tomography (CT-scan) and scanning electron microscopy (SEM), detailed data concerning SCG are obtained.
The combined application of FNCT and such imaging techniques is explicitly advantageous and recommended to gain important information on damage occurring to PE-HD induced by mechanical stress and the influence of environmental liquids, which is essential within the Fourth Industry Revolution.
Die Additive Fertigung (AM) wird eingesetzt, um komplexe Bauteile für die Luftfahrt-, Medizin- und Automobilindustrie kostengünstig und zeitsparend herzustellen. Der Einsatz von AM in der Industrie erfordert eine strenge Qualitätskontrolle der hergestellten Teile, um die geforderten Normen erfüllen zu können. Aus diesem Grund spielen die Prozessüberwachung und die Anwendung von Methoden der zerstörungsfreien Prüfung eine große Rolle, was im Fokus unserer aktuellen Forschung steht. In dieser Arbeit benutzen wir Röntgenrückstreuung, welche lediglich einen einseitigen Zugang zum Objekt benötigt, um innenliegende, künstlich hergestellte Defekte in additiv gefertigten Stufenkeilen aus Polyamid 12 (PA 12, Laser Sintering) sowie Acrylnitril-Butadien-Styrol (ABS, Fused Layer Modeling) zu untersuchen. Dafür wurde ein von der Firma AS&E (Boston, USA) konstruierter Prototyp verwendet, der ursprünglich für den Sicherheitsbereich entwickelt wurde. Die Messung der Rückstreuung basiert auf der Flying-Spot Technik mit einem stark kollimierten Nadelstrahl, erzeugt von einem rotierenden Kollimator, wobei großflächige Detektoren die rückgestreute Strahlung sammeln. Da die Anforderungen an die räumliche Auflösung sowie die Kontrastempfindlichkeit in der zerstörungsfreien Prüfung (ZfP) über denen im Sicherheitsbereich liegen, ist eine Optimierung des Prototyps notwendig, um eine Bildqualität zu erreichen, wie sie in der ZfP gefordert ist. Darüber hinaus wurden klassische Durchstrahlungsprüfungen durchgeführt, um die Fähigkeit des Rückstreusystems bei der Defekterkennung in den untersuchten Objekten einschließlich innenliegender Defekte vergleichen und bewerten zu können. Die nachweisbaren Poren und Lufteinschlüsse sind in den Durchstrahlungsaufnahmen, besonders bei den PA 12 Proben, kleiner als in den mittels Rückstreuung erzeugten Bildern. Daher ist eine weitere Optimierung des AS&E- Prototypen notwendig und zusätzliche Untersuchungen sind erforderlich, um die ZfP-Anforderungen zu erfüllen und die Anwendungsgrenzen dieses Geräts zu ermitteln. Jedoch zeigen Vergleichsmessungen mit gedruckten Leichtmetallen (Al), dass die Rückstreutechnik eine vielversprechende Methode zur in-situ Qualitätssicherung mehrerer cm großer Bauteile mit inneren Defekten ab ca. 400 μm Größe ist.
Formation of interphases between inorganic nanofillers and thermoplastic matrices are usually correlated to short-range interactions which does not exceed more than tens of nanometers away from the surface of the filler. Nevertheless, in nanocomposites with thermosetting matrices, the effect of nanofillers on the properties of the matrix is not limited to the immediate vicinities, but a long-range property alteration of the bulk polymer may be observed. The interaction between nanofillers and the polymer can disturb the curing reaction and alters the chemical, physical and mechanical properties of the polymer network in the matrix phase. In our studies, we aim to investigate short and long-range interphases of a nanocomposite system consisting of a thermosetting matrix (DGEBA) filled with an inorganic nanoparticle (boehmite). For this purpose, a combination of atomic force microscopy (AFM)-based approaches is implemented. Scanning kelvin probe microscopy (SKPM) was used to map the compositional contrast and the interphase with different electrical properties than the bulk. The mechanical properties of the interphase were probed by high resolution intermodulation AFM. (ImAFM). Furthermore, infrared spectroscopy AFM (AFM-IR) is used to investigate the chemical structure of the matrix at different distances from the nanoparticle. SKPM and (AFM-IR) measurements both show a long-range (to 10 µm) effect of boehmite on the chemical structure and surface potential of the bulk epoxy, respectively, whereas ImAFM force measurements reveals a short-range mechanical interphase between the filler and the matrix. The AFM-IR demonstrated the existence of unreacted anhydride hardener at the interphase. This indicates the preferential absorption of anhydride on the surface of boehmite. The consequence of such a selective interaction between the inorganic filler and the epoxy components is disturbance of the epoxy-hardener stoichiometric ratio, the curing mechanism. and the alteration of bulk properties of the matrix.
A new dual purpose cask design was developed for the safe transport and interim storage of spent fuel elements of German research reactors. In the framework of the safety assessment within the licensing procedure the Bundesanstalt für Materialforschung und –prüfung (BAM) as competent authority performed a series of drop tests according to the IAEA-Regulations. The package consists of a cylindrical thick-walled ductile cast iron cask body closed by a double lid system with metallic seals. A lid and bottom sided impact limiter consisting of a wood/steel construction limit the mechanical impact loading. The full-scale test specimen was equipped with a basket and assembled with dummy-fuel elements. The package and test specimen, respectively have a total mass of approximately 24 metric tons.
The mechanical test program included three 9m free drop tests, in horizontal, vertical and oblique cask orientation onto the lid system. Additionally, a 1m-puncture drop test followed the horizontal drop test to consider an IAEA-test sequence. The horizontal and vertical drop tests were performed at a temperature of minus 40°C. During the oblique drop test the upper impact limiter was heated to +80°C. The tests were conducted onto an unyielding target, fulfilling the requirements of the IAEA regulations.
The test specimen was considerably instrumented with strain gauges and accelerometers. Transient strains at selected locations of the inner and outer container walls, of the primary and secondary lid, as well as of the corresponding lid bolts were measured during the drop tests. Furthermore, decelerations in different locations at the cask body and the lids were measured. The complex geometrical deformation of the impact limiters due to the impact were determined by optical 3d- measurements using the projected fringe method in combination with multi-image photogrammetry. Before and after the drop tests the leakage rate of the lid system was determined by helium leakage testing.
The experimental results contribute to the evaluation of the package response to mechanical tests, demonstrating safety under normal and accident conditions of transport. Especially to the verification of the dynamic finiteelement model of the package used in the package design safety report. The paper describes the performance of the drop tests, selected test results focusing on the lid screws and the cask body and the deformation of the impact limiters as well as impact kinematics, respectively.
Glass
(2019)
Overview about the key activities of division 5.6 glass and the diversity of the material glass. For the vacuum hot extraction method (VHE-MS) some examples are presented e. g. for the measurement of water content or the determination of diffusion coefficient of hydrogen in glasses. Finally, an outlook is shown on the robot controlled glass screening device which will be available next year.
Glass powders are promising candidates for manufacturing a broad diversity of sintered materials like sintered ¬glass-ceramics, glass matrix composites or glass bonded ceramics with tailored mechanical, thermal, electrical and optical properties and complex shape. Its wide and precise adjustability makes this class of materials a key component for advanced technologies. Processing of glass or composite powders often allow even more flexibility in materials design. At the same time, however, processing can have substantial effects on the glass powder surface and sinterability. Thus, mechanical damage and surface contamination can strongly enhance surface crystallization, which may retard or even fully prevent densification. Whereas sintering and concurrent crystallization have been widely studied, partially as cooperative effort of the TC7 of the ICG, and although glass powder sintering is predominantly applied for glasses of low crystallization tendency, sintering is also limited by gas bubble formation or foaming. The latter phenomenon is much less understood and can occur even for slow crystallizing glass powders. The lecture illustrates possible consequences of glass powder processing on glass sintering, crystallization and foaming.
In service, most materials are operated under simultaneous corrosive and mechanical load and there are very few methods capable for testing material degradation under these conditions, especially when it comes to high resolution analysis. For this purpose, in this work, a tensile module capable of uniaxial stretching and compression with up to 5 kN force was integrated into an AFM stage. The elimination of the need for sample unmounting and remounting and the resulting possibility of keeping the sample under constant mechanical load during AFM measurements not only enables a precise positioning of the area of interest but also allows for the analysis of processes in the elastic deformation regime.
This methodology was demonstrated for two case studies. Scanning Kelvin Probe Force Microscopy (SKPFM) was used as the main tool to characterize the deformation behavior. Moreover, a flexible electrochemical measurement cell was used to enable electrochemical analysis by means of electrochemical impedance spectroscopy (EIS) and Linear Sweep Voltammetry (LSV) during AFM measurements at different levels of strain. The in situ AFM results are complemented by microstructure analysis by means of electron backscatter diffraction (EBSD).
In the first case study, the deformation induced delamination of a thin organic coating on AA2024 T3 aluminium alloy was investigated as a function of alloy surface treatment. The formation of cracks in the insulating passive film enabled an early detection of deformation processes by means of SKPFM. The second case study focused on the comparison of corrosion and deformation behavior of conventional and additively manufactured 316 stainless steels. In comparison to the conventional 316 stainless steel, the effect of processing was clearly detectable on the additively manufactured material as zones of inhomogeneous potential, which also affected the initiation of local corrosion processes. The contribution will provide detailed information on the new AFM setup and summarize our results from both case studies.
The performance of functional coatings and adhesively joined hybrid components relies strongly on the stability of the polymer-metal interface. With the increasing utilization of multi-material structures in the automotive and aerospace industry, it is of great scientific and technical interest to understand the processes leading to interface degradation and to develop novel strategies to increase corrosion and delamination resistance.
The aim of this project is to develop thin epoxy-based films and their carbon nanofiller loaded composites on aluminium alloy AA2024-T3 as a model system and to investigate their interfacial stability under corrosive and coupled corrosive-mechanical load. Spin coating was used for the layer-by-layer deposition of poly[(o-cresyl glycidyl ether)-co-formaldehyde] and poly-(ethylenimine) bi-layers. Atomic force microscopy (AFM) results indicate a very homogeneous and dense film with low surface roughness. Carbon nanofillers were introduced either by mixing into the coating components or in between individual layers to control the separation between the carbon nanofillers and alloy surface. The film chemistry and barrier properties were characterized by means of spectroscopic and electrochemical methods, respectively. The degradation and delamination behavior of the epoxy-based films was characterized by means of in situ AFM corrosion experiments. The quantitative imaging (QI) mode allowed the observation of hydrogen-generation induced blister formation during exposure to corrosive electrolyte and how the local corrosion processes evolved with exposure time. Complementary energy dispersive X-ray spectroscopy (EDX) analysis was performed to correlate the corrosion behavior with the different intermetallic particle chemistries and distributions. The presentation will summarize our results on the effect of interface chemistry and carbon nanofiller – alloy separation on the initiation of local corrosion processes on thin film covered AA2024-T3 aluminium alloys.
The presentation summarizes our recent results on the coupled electrochemical methods for high resolution corrosion studies. The combination of Scanning Electrochemical Microscopy (SECM) and multielectrode (MMA) based real-time corrosion monitoring was presented as a new method for achieving high time resolution in local electrochemical analysis. Correlative imaging by means of Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) was demonstrated as a tool for the investigation of local corrosion processes initiated by the intermetallic particles (IMPs) on AA2024-T3 aluminium alloy.
The study presented here focusses on a systematic analysis of oxidation mechanisms of the well-known Cr20Mn20Fe20Co20Ni20 alloy and one of its ternary sub-system Cr33.3Co33.3Ni33.3 which were reported in the literature to exhibit attractive mechanical properties. Both alloys are single phase fcc prior to oxidation and were simultaneously exposed to different oxygen containing atmospheres at 700° C and 800° C for durations up to 288 h. Cr20Mn20Fe20Co20Ni20 showed poor oxidation resistance at high temperatures due to its high amount of manganese leading to the formation of non-protective Mn-oxide scales. In contrast, a relatively homogeneous and protective chromia layer was found to form on CrCoNi at 700° C and 800° C after each exposure time. Mass change-, SEM- and XRD analysis of the oxide layers were performed in the present study and provide a better understanding of the oxidation mechanisms as well as the impact of the alloy composition on oxidation behavior.