TY - CONF A1 - Theiler, Geraldine T1 - Influence of hydrogen environment on the tribological performance of polymer composites T2 - 16th World Hydrogen Energy Conference CY - Lyon, France DA - 2006-06-13 PY - 2006 AN - OPUS4-16268 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Theiler, Geraldine T1 - Mechanical and tribological properties of polymer composites at cryogenic temperatures T2 - Cryogenic Material Conference '06 (ICMC '06) CY - Prague, Czech Republic DA - 2006-01-01 PY - 2006 AN - OPUS4-18218 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - THES A1 - Wolf, Martin T1 - Zur Phänomenologie der Heißrissbildung beim Schweißen und Entwicklung aussagekräftiger Prüfverfahren N2 - Zur Ermittlung der Heißrissresistenz beim Schweißen metallischer Werkstoffe können Heißrisstests eingesetzt werden. Obwohl bislang zahlreiche Heißrisstestverfahren entwickelt wurden, kann eine unerwartete Heißrissbildung während der Durchführung von Bauteilschweißungen oftmals nicht verhindert werden. Dies ist einerseits darauf zurückzuführen, dass sich die Bedingungen im Heißrisstest von den thermomechanischen Beanspruchungen einer Bauteilschweißung zu sehr unterscheiden. Andererseits erfolgt die Auswertung der meisten Heißrissversuche mit Hilfe empirischer Parameter, mit denen die eigentlichen Mechanismen der Heißrissentstehung jedoch nur unzureichend quantifiziert werden können. Ein wesentliches Ziel war es daher, aussagekräftige Methoden zur Quantifizierung des Heißrissverhaltens beim Schweißen zu entwickeln und damit einen Beitrag zur Erhöhung der Heißrisssicherheit geschweißter Bauteile zu leisten. N2 - For determining the hot cracking resistance of materials during welding of metallic materials it is possible to employ hot cracking tests. Despite numerous hot cracking tests have been developed till now, unexpected hot cracking during welding cannot always be avoided. This is on the one hand ascribed to the fact that the conditions prevalent in hot cracking testing differ too strongly from the thermomechanical loads imposed during component welding. On the other hand, evaluation of most hot cracking tests is carried out using empiric parameters which, however, fall short of adequate quantification of the actual hot cracking mechanism. A key aim of this study was therefore to develop convincing methods for quantifying the hot cracking behaviour during welding, and thus to make a contribution towards improving the hot cracking resistance of welded components. As a prerequisite, the Modified Varestraint Transvarestraint-Test (MVT-Test) was first upgraded with a view to varying the specimen loading rate over a very wide range up to quasi-instantaneous loading. As test material, Alloy 602 CA was chosen which exhibits a pronounced dependence of hot cracking resistance on the respective shielding gas. With the use of Ar 4.8 and Ar + 1% N2 as shielding gases, hot crack-critical as well as hot crack-uncritical material behaviour could be investigated. For further elucidation of the solidification cracking mechanism, a combined model was first developed which can be used to demonstrate that the solidification crack-critical limiting temperature TER and the solidification crack-critical strain rate (dε/dt)krit are largely independent of each other and must be determined using various test concepts. Numerical temperature calculations with first implementation of the reproduced real weld pool geometries helped to determine the solidification crack-critical limiting temperature for Alloy 602 CA as a function of different welding parameters and of the investigated shielding gases. It is demonstrated that the solidification crack-critical limiting temperature rises significantly with the use of Ar + 1% N2. In addition to this, the solidification crack-critical limiting temperature is significantly dependent on the applied welding parameters. The MVTTest was also used to conduct experiments with variable specimen loading rate in both the Varestraint and the Transvarestraint mode. Various hot cracking parameters determined in these experiments were evaluated quantitatively. With regard to exclusively qualitative determination of the hot cracking resistance of materials it was found that the measurable differences are more distinct in the Varestraint mode than in the Transvarestraint mode. For hot cracking test transferability investigations, the very critical specimen loading rates at which solidification cracking does not occur yet, were experimentally determined in MVTTests. Using the obtained results in conjunction with thermomechanical simulations, the local critical strain rates in the immediate vicinity of the weld pool were calculated. It is shown that the local critical strains and strain rates constitute a crack criterion for the transferability to the newly developed Controlled Tensile Weldability Test (CTW-Test). Keywords: Solidification cracking, liquation cracking, global strain, local strain, transferability, Modified Varestraint Transvarestraint Test, weld pool geometry, hot cracking parameter, Controlled Tensile Weldability Test, Alloy 602 CA. T3 - BAM Dissertationsreihe - 19 KW - Phänomenologie Heißrissbildung KW - Schweißen und Entwicklung aussagekräftiger Prüfverfahren PY - 2006 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-1395 SN - 978-3-86509-599-2 SN - 1613-4249 VL - 19 SP - 1 EP - 218 PB - Wirtschaftsverlag NW CY - Bremerhaven AN - OPUS4-139 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eliezer, Dan A1 - Tal-Gutelmacher, E. A1 - Cross, Carl Edward A1 - Böllinghaus, Thomas ED - Gdoutos, E. T1 - Irreversible Hydrogen Trapping in Welded Beta-21S Titanium Alloy T2 - 16th European Conference of Fracture CY - Alexandroupoli, Greece DA - 2006-07-03 KW - Titanium alloys KW - Beta-21S KW - Hydrogen desorption KW - Thermal Desorption Spectroscopy (TDS) PY - 2006 VL - 16 IS - 803 SP - 1 EP - 8 CY - Alexandroupolis AN - OPUS4-14453 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baer, Wolfram T1 - Ductile Cast Iron (DCI) - 30 years of performance in transport and storage casks for radioactive materials - the authorities experience T2 - Material workshop of the national nuclear safety administration of the Peoples Republic of China CY - Beijing, China DA - 2006-11-10 PY - 2006 AN - OPUS4-13783 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Stelling, Karen A1 - Lammers, Marco A1 - Böllinghaus, Thomas T1 - Qualification of Nd:YAG and CO2 laser plasma hybrid welding with filler material powder KW - Hybrid welding KW - Nickel base alloy KW - Laser arc KW - Out of position welding PY - 2006 SN - 1612-3433 VL - 5 IS - 6 SP - 330 EP - 334 PB - DVS - German Welding Society CY - Düsseldorf AN - OPUS4-14561 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann-Böllinghaus, Anja T1 - Computermodellierung von Wohnungsbränden unter Berücksichtigung von Rauchmeldern und Flammschutzmitteln T2 - Fachtagung Kunststoffe, Brandschutz und Flammschutzmittel CY - Würzburg, Germany DA - 2006-06-21 PY - 2006 N1 - Geburtsname von Hofmann-Böllinghaus, Anja: Hofmann, A. - Birth name of Hofmann-Böllinghaus, Anja: Hofmann, A. AN - OPUS4-12540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Wolfram A1 - Kühne, Hans-Carsten T1 - Entwicklung eines selbstverdichtenden Betons mit inerten Zusatzstoffen-Prüfung nach europäischer Richtlinie für SVB N2 - Im Rahmen von MICROCON, einem europäischen CRAFT-Projekt, besteht eine wesentliche Zielsetzung in der Optimierung von selbstverdichtendem Beton (SVB) im Hinblick auf Kosten und Leistungsfähigkeit durch den Einsatz von teilweise puzzolanischen Microfillern. Um die Puzzolanität bei der Beurteilung besser bewerten zu können, wird ein Referenzbeton benötigt, der aus weitestgehend inerten Zusatzstoffen besteht. Die Entwicklung eines solchen Referenzbetons fand an der BAM nach der japanischen Methode nach Okamura statt. T2 - Wissenschaftsrat CY - Berlin, Germany DA - 17.02.2006 PY - 2006 AN - OPUS4-12030 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Baer, Wolfram T1 - Key Curve-Einprobenverfahren zur Ermittlung dynamischer Bruchmechanikkennwerte duktiler Gusseisenwerkstoffe? - Review und Analyse T2 - 38. Tagung des DVM-Arbeitskreises Bruchvorgänge "Technische Sicherheit, Zuverlässigkeit und Lebensdauer" CY - Aachen, Deutschland DA - 2006-02-14 KW - Key Curve KW - Dynamische Bruchmechanik KW - Duktiles Gusseisen KW - Einprobenverfahren KW - Dynamische Risswiderstandskurve KW - Review PY - 2006 VL - 38 SP - 91 EP - 98 CY - München AN - OPUS4-12669 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter T1 - Feuchtemessung an Modellböden zur Nachbilidung von Prozessen auf der Marsoberfläche T2 - XI. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 2006-11-14 PY - 2006 AN - OPUS4-13891 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Charakterisierung der Porenstruktur von ultrahochfestem Beton T2 - XIII. Workshop über die Charakterisierung von feinteiligen porösen Festkörpern CY - Bad Soden, Germany DA - 2006-11-14 PY - 2006 AN - OPUS4-14125 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter T1 - Feuchtemessung an Modellböden zur Nachbildung von Prozessen auf der Marsoberfläche T2 - XI. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 2006-11-14 PY - 2006 AN - OPUS4-13806 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klinger, Christian T1 - Schadensanalyse an umgebrochenen Strommasten im Münsterland 2005 T2 - Werkstoffprüfung 2006 CY - Bad Neuenahr, Germany DA - 2006-12-07 PY - 2006 AN - OPUS4-13895 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Baer, Wolfram T1 - Thomasstahl differenziert betrachten KW - Thomasstahl KW - Alterung KW - Eigenschaften KW - Werkstoffeinsatz PY - 2006 SN - 0340-4803 SN - 0340-479x VL - 126 IS - 9 SP - 77 PB - Verl. Stahleisen CY - Düsseldorf AN - OPUS4-32642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Thünemann, Andreas A1 - Kubowicz, S. A1 - v. Berlepsch, H. A1 - Möhwald, H. T1 - Two-Compartment Micellar Assemblies Obtained via Aqueous Self-Organization of Synthetic Polymer Building Blocks N2 - We synthesized a symmetric linear ABCBA pentablock copolymer consisting of poly(ethylene oxide), poly(-benzyl L-glutamate), and a poly(perfluoro ether) (fluorolink). The different blocks are highly immiscible with each other and form two-compartment micelles of mainly cylindrical shape in aqueous solution with lengths in the range of 100 to 200 nm and diameters of about 24 nm. The poly(perfluoro ether) (C blocks) forms the liquidlike center of the micelles (d = 6 nm). This is surrounded by a first shell of ca. 2 nm thickness consisting of -sheets of poly(-benzyl L-glutamate) (B blocks) and a second 7 nm shell of poly(ethylene oxide) (A blocks). The A blocks provide water solubility, and the B and C blocks form separated hydrophobic compartments. This work is a contribution to the development of multicompartment micelles devoted to mimic transport proteins such as serum albumins in long-term development. KW - Micelles KW - Block-copolymers PY - 2006 DO - https://doi.org/10.1021/la0533720 SN - 0743-7463 SN - 1520-5827 VL - 22 IS - 6 SP - 2506 EP - 2510 PB - American Chemical Society CY - Washington, DC AN - OPUS4-12190 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thünemann, Andreas T1 - Maghemite nanoparticles protectively coated with poly(ethylene imine) and poly(ethylene oxide)-block-oly(glutamic acid) T2 - 6th international Conference on Scientific and Clinical Applications of Magnetic Carriers CY - Krems, Austria DA - 2006-05-17 PY - 2006 AN - OPUS4-13829 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, K. T1 - PTFE-based composites for Tribology apllications in a range between liquid helium and room temperature T2 - 5. Asian-Australasian Conference on Composite Materials (ACCM-5) CY - Hong Kong, China DA - 2006-11-27 PY - 2006 AN - OPUS4-30883 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Thünemann, Andreas A1 - Schütt, D. A1 - Sachse, R. A1 - Schlaad, H. A1 - Möhwald, H. T1 - Complexes of Poly(ethylene oxide)-block-Poly(L-glutamate) and Diminazene KW - Polymers KW - Nanoparticles KW - Proteins PY - 2006 SN - 0743-7463 SN - 1520-5827 VL - 22 IS - 5 SP - 2323 EP - 2328 PB - American Chemical Society CY - Washington, DC AN - OPUS4-12117 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Leiterer, Jork A1 - Leitenberger, W. A1 - Emmerling, Franziska A1 - Thünemann, Andreas A1 - Panne, Ulrich T1 - The use of an acoustic levitator to follow crystallization in small droplets by energy-dispersive X-ray diffraction N2 - For the investigation of small sample volumes, the use of an acoustic levitator was tested as a `sample holder' for hovering droplets in a synchrotron beam. It might be advantageous to use levitated droplets instead of samples confined in solid holders, especially for the study of crystallization processes where the influence of containing walls has to be minimized. In a first experiment, the crystallization of sodium chloride in a small droplet of aqueous solution has been followed with a time resolution of 30 s. The collected diffraction peaks are compared with data in the ICSD database. KW - EDXD KW - Noncontact measurement technique KW - X-ray-scattering KW - Synchrotron-radiation KW - Acoustic levitation PY - 2006 DO - https://doi.org/10.1107/S0021889806024915 SN - 0021-8898 SN - 1600-5767 VL - 39 IS - 5 SP - 771 EP - 773 PB - Blackwell CY - Oxford AN - OPUS4-13516 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leiterer, Jork T1 - Characterisation of levitated samples for modelling of condensed matter N2 - Many of today’s analytical problems are characterized by small sample volumes and can only be solved through a corresponding miniaturisation of the analytical instrumentation. Handling of small-sample volumes is inherently difficult due to contamination and sorption processes on the walls of containers. Acoustic levitation is a powerful tool for contact-free sample handling of solid, liquid, and selected gaseous samples. In addition, levitation permits a chemical pre-treatment such as enrichment, extraction, and derivatisation as well as combination with other analytical techniques such as optical spectroscopy. Acoustically levitated liquid and solid samples are typically in a range between 0.005-5 µl (diameter 0.2-2 mm respectively) and are suspended in a gaseous environment by a stationary ultrasonic field. Acoustic levitation avoids sample contamination and sorption processes by container walls, but suffers from evaporation and loss of solvents. Nonetheless, it is of great impact for the characterization of small samples. Exact determination of volume is inherently important to find out the resultant concentration in evaporating droplets. Levitation is a possibility to characterise the starting conditions of crystallisation and polymerisation. Even for spectroscopic methods the correct information on shape, size and concentration of samples are indispensable. To determine the size and volume of levitated samples, different methods of contactless droplet size monitoring were developed and compared in detail. They give the initial values for modelling of evaporation effects. In addition, for balancing evaporation and condensation on levitated drops during the experiments, non-contact techniques of solvent and reagent supply have been tested. Here, the advantages of acoustic levitation are demonstrated for on line analysis of crystallisation in a levitated droplet. The evaporation and formation of crystals is observed via time-resolved X-ray diffraction using synchrotron radiation at BESSY. Wall-free crystallisation in an acoustic levitator gives a tool to prove existing models concerning crystallisation processes. Furthermore the occurrence of polymorphic modifications depending on different conditions can be detected in situ under different and adjustable conditions. T2 - 13. Vortragstagung "Modellierung in der Festkörper- und Materialchemie" der GDCh-Fachgruppe Analytische Chemie, Rheinisch-Westfälische Technische Hochschule Aachen CY - Aachen, Germany DA - 2006-09-20 PY - 2006 AN - OPUS4-13805 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weiss, S. I. A1 - Sieverling, N. A1 - Niclasen, M. A1 - Maucksch, Ch. A1 - Thünemann, Andreas A1 - Möhwald, H. A1 - Reinhardt, D. A1 - Rosenecker, J. A1 - Rudolph, C. T1 - Uronic acids functionalized polyethyleneimine (PEI)-polyethyleneglycol (PEG)-graft-copolymers as novel synthetic gene carriers N2 - In this study, we investigated galacturonic (GalAc)- and mannuronic (ManAc) acids as novel targeting ligands for receptor-mediated gene delivery. GalAc and ManAc were coupled to either polyethyleneimine (PEI) or PEI–polyethyleneglycol (PEG). Furthermore, lactobionic acid (LacAc), which comprises a GalAc-related carbohydrate ring, was coupled to each of the polymers through its open-chain gluconic acid moiety. The molar mass distributions of the polymers were characterized by analytical ultracentrifugation and size exclusion chromatography. PEI-conjugate–pDNA complexes were transfected into HepG2-, HeLa-, and 16HBE14o--cells. Gene expression mediated by GalAc- and LacAc-functionalized PEI-conjugates was lower than for PEI. In contrast, gene expression mediated by ManAc-functionalized PEI-conjugates was up to three orders of magnitude higher than for the other tested PEI-conjugates, in particular for negatively charged gene vectors at low N/P ratios, independent of the cell line. Pre-incubation of cells with an excess of ManAc before transfection significantly inhibited transfection rates only for ManAc-functionalized PEI-conjugates. Coupling of methyl-α-D-mannuronic acid to PEI resulted in significantly lower transfection rates than for ManAc-PEI based complexes. Together with fluorescence microscopy images of fluorescein-labelled ManAc-functionalized dextrans and FACS analyses of cells, these results demonstrate that receptor-mediated endocytosis of ManAc–PEI-conjugate–pDNA complexes via ManAc-specific receptors was involved in gene transfer. In conclusion, ManAc-modification of PEI-polymers represents a novel strategy for receptor-mediated gene delivery which could be promising for in vivo application. KW - Gene therapy KW - Gene transfer KW - Polyethylene oxide KW - Nanoparticle PY - 2006 DO - https://doi.org/10.1016/j.biomaterials.2005.11.011 SN - 0142-9612 VL - 27 IS - 10 SP - 2302 EP - 2312 PB - Elsevier CY - Oxford AN - OPUS4-11678 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kolb, U. A1 - Büscher, K. A1 - Helm, C.A. A1 - Lindner, A. A1 - Thünemann, Andreas A1 - Menzel, Michael A1 - Higuchi, M. A1 - Kurth, D.G. T1 - The solid-state architecture of a metallosupramolecular polyelectrolyte N2 - Self-assembly of Fe(II) and the ditopic ligand 1,4-bis(2,2':6',2"-terpyridine-4'-yl)benzene results in equilibrium structures in solutions, so-called metallosupramolecular coordination polyelectrolytes (MEPEs). It is exceedingly difficult to characterize such macromolecular assemblies, because of the dynamic nature. Therefore, hardly any structural information is available for this type of material. Here, we show that from dilute solutions, where small aggregates predominate, it is possible to grow nanoscopic crystals at an interface. A near atomic resolution structure of MEPE is obtained by investigating the nanoscopic crystals with electron diffraction in combination with molecular modeling. The analysis reveals a primitive monoclinic unit cell (P21/c space group, a = 10.4 Å, b = 10.7 Å, c = 34.0 Å, α = γ = 90°, β = 95°, ρ = 1.26 g/cm³, and Z = 4). The MEPE forms linear rods, which are organized into sheets. Four sheets intersect the unit cell, while adjacent sheets are rotated by 90° with respect to each other. The pseudooctahedral coordination geometry of the Fe(II) centers is confirmed by Mössbauer spectroscopy. The combination of diffraction and molecular modeling presented here may be of general utility to address problems in structural materials science. KW - Polymer KW - Polyelectrolyte KW - Electron diffraction KW - Mössbauer spectroscopy KW - Molecular modeling KW - Supramolecular chemistry PY - 2006 SN - 0027-8424 SN - 1091-6490 VL - 103 IS - 27 SP - 10202 EP - 10206 PB - National Academy of Sciences CY - Washington, DC AN - OPUS4-12495 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Laschewsky, A. A1 - Mertoglu, M. A1 - Kubowicz, S. A1 - Thünemann, Andreas T1 - Lamellar Structured Nanoparticles Formed by Complexes of a Cationic Block Copolymer and Perfluorodecanoic Acid N2 - A double hydrophilic block copolymer was synthesized by controlled free radical polymerization, namely by the RAFT method, from a poly(ethylene oxide) macromonomer and a cationic acrylate. Stoichiometric complexes with sodium decanoate and with sodium perfluorodecanoate were prepared by self-assembly. Both complexes are soluble in water forming core-shell nanoparticles with hydrodynamic radii of 54 and 22 nm, respectively, and neutral potentials. The complex containing decanoate decomposed upon dilution, while the complex with perfluorodecanoate is stable even against dialysis and in salt solution. Only the nanoparticles containing perfluorodecanoate show a strong contrast in small-angle X-ray scattering (SAXS). It is produced from their cores that have an elliptical shape (short axes = 8.5 nm, long axis = 23.3 nm) and a sharp density transition to the shell. The cores exhibit an internal lamellar structure with a long period of 3.65 nm consisting of fluorocarbon rich lamellae (d1 = 3.00 nm) and lamellae enriched in ionic groups (d2 = 0.65 nm). These fluorinated nanoparticles coexist in physiological buffer with human serum albumin and fibrinogen without inducing aggregation. Moreover, the content of -helix of these serum proteins increased when in solution with the fluorinated nanoparticles. KW - Small-angle X-ray scattering (SAXS) KW - Block-copolymers KW - Polymeric nanoparticles KW - Protein secondary structure PY - 2006 DO - https://doi.org/10.1021/ma061573k SN - 0024-9297 SN - 1520-5835 VL - 39 IS - 26 SP - 9337 EP - 9345 PB - American Chemical Society CY - Washington, DC AN - OPUS4-14392 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Procop, Mathias A1 - Hodoroaba, Vasile-Dan A1 - Bjeoumikhov, A. A1 - Eggert, F. A1 - Wedell, R. T1 - Combination of electron probe microanalysis and X-ray fluorescence analysis in a scanning electron microscope T2 - 45th Annual Port Elizabeth Conference CY - Port Elizabeth, South Africa DA - 2006-11-29 KW - myXRF at SEM KW - EPMA KW - Detection limits PY - 2006 SN - 0-620-37294-X VL - 36 SP - 26 CY - Onderstepoort AN - OPUS4-14567 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Alvisi, M. A1 - Blome, M. A1 - Griepentrog, Michael A1 - Hodoroaba, Vasile-Dan A1 - Karduck, P. A1 - Mostert, M. A1 - Nacucchi, M. A1 - Procop, Mathias A1 - Rohde, M. A1 - Scholze, F. A1 - Statham, P. A1 - Terborg, R. A1 - Thiot, J.-F. T1 - The Determination of the Efficiency of Energy Dispersive X-Ray Spectrometers by a New Reference Material N2 - A calibration procedure for the detection efficiency of energy dispersive X-ray spectrometers (EDS) used in combination with scanning electron microscopy (SEM) for standardless electron probe microanalysis (EPMA) is presented. The procedure is based on the comparison of X-ray spectra from a reference material (RM) measured with the EDS to be calibrated and a reference EDS. The RM is certified by the line intensities in the X-ray spectrum recorded with a reference EDS and by its composition. The calibration of the reference EDS is performed using synchrotron radiation at the radiometry laboratory of the Physikalisch-Technische Bundesanstalt. Measurement of RM spectra and comparison of the specified line intensities enables a rapid efficiency calibration on most SEMs. The article reports on studies to prepare such a RM and on EDS calibration and proposes a methodology that could be implemented in current spectrometer software to enable the calibration with a minimum of operator assistance. KW - Energy dispersive X-ray spectrometry KW - Standardless analysis KW - X-ray detectors KW - Detection efficiency KW - Spectrometer calibration PY - 2006 DO - https://doi.org/10.1017/S1431927606060557 SN - 1431-9276 SN - 1435-8115 VL - 12 IS - 5 SP - 406 EP - 415 PB - Cambridge University Press CY - New York, NY AN - OPUS4-13135 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Correlation between degree of cure and fracture behaviour of electro installation parts made from urea formaldehyde resin T2 - Polydays 2006 CY - Berlin, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-13500 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hodoroaba, Vasile-Dan A1 - Hoffmann, V. A1 - Steers, E.B.M. A1 - Griepentrog, Michael A1 - Dück, Alexander A1 - Beck, Uwe T1 - Round Robin exercise: Coated materials for glow discharge spectroscopy N2 - A Round Robin (RR) exercise on selected coated materials has been carried out with the aim of finding the optimal conditions for the analysis of nitride layers with GD-OES. Such pre-normative work is necessary for the evaluation of parallel development of the production of nitride layers as certified reference materials (CRMs). Two types of samples, Ti–N layer and V–N layer, respectively, with chemical compositions close to stoichiometry and a thickness of ~3 µm, deposited on a steel substrate, have been provided to the RR participants. Additionally, another type of sample, a (100 nm CrNi/100 nm Cu) multilayer (ML) stack deposited on silicon wafer has also been included in the RR. This sample can be used as a CRM for checking GD spectrometer conditions and it has been proved helpful in further development of GDS instrumentation and methodology. The RR exercise has been performed in the frame of the EC Thematic Network on Glow Discharge Spectroscopy for Spectrochemical Analysis (‘GDS-Net’). KW - Coated/Layered Reference Materials KW - Nitrides KW - Multilayer KW - GDS KW - Round Robin PY - 2006 DO - https://doi.org/10.1039/B513426A SN - 0267-9477 SN - 1364-5544 VL - 21 IS - 1 SP - 74 EP - 81 PB - Royal Society of Chemistry CY - London AN - OPUS4-11762 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Skrotzki, Birgit T1 - LCF and TMF behavior of a Ti-6242/SCS-6 metal matrix composite T2 - Light Metals Seminar, Universität Clausthal-Zellerfeld CY - Clausthal-Zellerfeld, Germany DA - 2006-11-20 PY - 2006 AN - OPUS4-13785 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Calculation of X-Ray spectra emitted from a microfocus X-Ray tube with X-Ray optics T2 - European Conference on X-Ray Spectrometry (EXRS 2006) CY - Paris, France DA - 2006-06-19 PY - 2006 AN - OPUS4-12470 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hodoroaba, Vasile-Dan T1 - GD-OES as an analytical tool for electroplated components susceptible to hydrogen embrittlement T2 - 2006 Winter Conference on Plasma Spectrochemistry CY - Tucson, AZ, USA DA - 2006-01-08 PY - 2006 AN - OPUS4-11990 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hodoroaba, Vasile-Dan A1 - Riedel, J.-U. A1 - Paatsch, Wolfgang T1 - GD-OES as an analytical tool for electroplated components susceptible to hydrogen embrittlement KW - GD-OES KW - GDS KW - Hydrogen KW - Embrittlement PY - 2006 SN - 0161-6951 VL - 31 SP - 354 EP - 356 PB - ICP Information Newsletter, Inc. CY - Amherst, Mass. AN - OPUS4-11935 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hodoroaba, Vasile-Dan T1 - Berechnung von Röntgenröhrenspektren auf der Grundlage experimenteller Röntgenausbeuten T2 - Forschungsseminar "Ausgewählte analytische Methoden der Physik" CY - Berlin, Germany DA - 2006-05-30 PY - 2006 AN - OPUS4-12453 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brookes, Stephen-Peter T1 - Phase change in Ti-45Al-5Nb after Electrode Discharge Machining (EDM) T2 - DGM Fachausschuss Titan, Technische Universität CY - Clausthal-Zellerfeld, Germany DA - 2006-09-07 PY - 2006 AN - OPUS4-12623 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Procop, Mathias A1 - Hodoroaba, Vasile-Dan A1 - Griepentrog, Michael T1 - A new material for the performance check of X-ray spectrometers attached to a SEM T2 - Microscopy and Microanalysis 2006 CY - Chicago, IL, USA DA - 2006-07-30 KW - X-ray spectrometer KW - EDS KW - WDS KW - Calibration PY - 2006 DO - https://doi.org/10.1017/S1431927606061307 SN - 1431-9276 SN - 1435-8115 VL - 12 IS - Supplement 2 SP - 870 EP - 871 PB - Cambridge University Press CY - New York, NY AN - OPUS4-12665 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Procop, Mathias A1 - Hodoroaba, Vasile-Dan A1 - Bjeoumikhov, A. T1 - Calculation of X-ray spectra for a side window tube T2 - Microscopy and Microanalysis CY - Chicago, IL, United States of America DA - 2006-07-30 KW - X-ray spectroscopy KW - X-ray tube KW - Microanalysis KW - XRF PY - 2006 DO - https://doi.org/10.1017/S143192760606123X SN - 1431-9276 SN - 1435-8115 VL - 12 IS - Supplement 2 PB - Cambridge University Press CY - New York, NY AN - OPUS4-12667 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Combination of electron probe microanalysis and X-ray fluorescence analysis in a scanning electron microscope T2 - 45th Annual Conference of the Microscopy Society of Southern Africa (MSSA 2006) CY - Port Elizabeth, South Africa DA - 2006-11-28 PY - 2006 AN - OPUS4-14228 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hodoroaba, Vasile-Dan T1 - Kombination von Elektronenstrahl-Mikroanalyse und Röntgenfluoreszenzanalyse im Rasterelektronenmikroskop T2 - 36. EDO Herbsttagung CY - Wuppertal, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-13192 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Skrotzki, Birgit T1 - Microstructure evolution of a near-gamma titanium aluminide alloy during creep loading T2 - Japan-South Africa-German Workshop and Summer School 2006 High Temperature Alloys CY - Bad Berneck, Germany DA - 2006-09-19 PY - 2006 AN - OPUS4-13038 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gusarova, Tamara T1 - Improvement of signal sensitivity using hollow cathode effect in glow discharge optical emission spectroscopy T2 - 13. GDS-Anwendertreffen CY - Hanau, Germany DA - 2006-09-04 PY - 2006 AN - OPUS4-13483 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gusarova, Tamara T1 - Improvement of signal sensitivity using hollow cathode effect in glow discharge optical emission spectroscopy T2 - Interessengemeinschaft Atomspektroskopie IGAS 2006 CY - Berlin, Germany DA - 2006-11-08 PY - 2006 AN - OPUS4-13776 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - A new material for the performance check of X-ray spectrometers attached to a SEM T2 - Microscopy and Microanalysis 2006 CY - Chicago, IL, USA DA - 2006-07-30 PY - 2006 AN - OPUS4-12630 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Calculation of X-ray spectra for a side window tube T2 - Microscopy and Microanalysis 2006 CY - Chicago, IL, USA DA - 2006-07-30 PY - 2006 AN - OPUS4-12629 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hodoroaba, Vasile-Dan T1 - iMOXS - a microfocus X-ray source for µ-XRF at a SEM T2 - 45th Annual Conference of the Microscopy Society of Southern Africa (MSSA 2006), Technical Forum CY - Port Elizabeth, South Africa DA - 2006-11-28 PY - 2006 AN - OPUS4-14230 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Bernd T1 - LCF-Verhalten der metastabilen beta-Titanlegierung Timetal LCF unter uniaxialer Belastung T2 - 17. Sitzung des DFGm-Fachausschusses "Titan" CY - Oppurg, Germany DA - 2006-09-07 PY - 2006 AN - OPUS4-14458 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Bäßler, Ralph A1 - Werner, H. A1 - Alves, H. A1 - Behrens, R. T1 - Corrosion-resistant higher-alloyed metallic materials for the transport of corrosive dangerous goods in tanks T2 - CORROSION 2006 CY - San Diego, CA, USA DA - 2006-03-12 KW - BAM-List KW - Dangerous goods KW - High-alloyed metallic tank materials KW - Corrosion tests KW - Korrosionsbeständigkeit KW - Tankwerkstoffe KW - Korrosionsuntersuchungen KW - Höherlegierte metallische Werkstoffe KW - BAM-Liste PY - 2006 SP - 06688/1 EP - 06688/12 PB - NACE CY - San Diego AN - OPUS4-12281 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bäßler, Ralph A1 - Burkert, Andreas A1 - Eich, Gerd T1 - Portable Equipment for Determination of Corrosion Stage of Concrete Structures - Comparison of Laboratory and On-Site Experiences T2 - Western States Corrosion Seminar : 40th CY - San Diego, CA, USA DA - 2006-03-12 KW - Galvanostatic Pulse KW - Reinforcement Corrosion KW - Corrosion Rate PY - 2006 SP - 06407\1 EP - 06407\11 PB - NACE CY - Houston AN - OPUS4-12151 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Corrosion-resistant high-alloyed metallic materials for the transport of corrosive dangerous goods in tanks T2 - CORROSION 2006 NACE International CY - San Diego, CA, USA DA - 2006-03-12 PY - 2006 AN - OPUS4-12268 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Hyphenated liquid-chromatographic, spectroscopic and spectrometric techniques for polymer characterization T2 - Fraunhofer & PTS-Seminar CY - Potsdam, Germany DA - 2006-03-22 PY - 2006 AN - OPUS4-12378 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Polymer characterization by combination of chromatographic techniques coupled with MALDI and ESI mass spectrometry T2 - Analytica Conference 2006 CY - Munich, Germany DA - 2006-04-25 PY - 2006 AN - OPUS4-12384 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bäßler, Ralph T1 - Suitability of portable electrochemical techniques for determination of corrosion stage of concrete structures in on-site conditions T2 - IABMAS Conference CY - Oporto, Portugal DA - 2006-07-17 PY - 2006 AN - OPUS4-12134 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -