5.1 Mikrostruktur Design und Degradation
Filtern
Dokumenttyp
- Beitrag zu einem Tagungsband (31) (entfernen)
Schlagworte
- Corrosion (13)
- CCS (6)
- CO2 (5)
- Steel (4)
- CCUS (3)
- CO2 quality (3)
- Carbon steel (3)
- Geothermal (3)
- Impurities (3)
- Martensitic steel (3)
- Pipeline (3)
- Pipeline network (3)
- Adiabatic calorimeter (2)
- CCU (2)
- CO2-storage (2)
- Carbon steels (2)
- Inconel 686 (2)
- Inverted classroom (2)
- Phase change material (2)
- Polyaniline (2)
- Recommendations (2)
- Salt eutectics (2)
- Schadensanalyse (2)
- SiO2 (2)
- Superaustenite steel (2)
- Supercritical CO2 (2)
- Supercritical/dense phase CO2 (2)
- Thermal energy storage (2)
- Utilization (2)
- Whole-chain CCS scenario (2)
- 3D (1)
- AISI 304L (1)
- Aggressive environment (1)
- Austenitic stainless steel (1)
- Biofilm (1)
- CO2 Corrosion (1)
- CO2 corrosion (1)
- Capture (1)
- Carbon (1)
- Carbon capture (1)
- Carbon capture storage (1)
- Cement (1)
- Coating (1)
- Coatings (1)
- Condensation (1)
- Corrosion and storage (CCUS) technology (1)
- Covid-19 (1)
- Crevice corrosion (1)
- Cyclic loading (1)
- Dense phase (1)
- Droplet (1)
- Droplet corrosion (1)
- EBSD (1)
- EIS (1)
- Fahrrad (1)
- Ferritic-martensitic steels (1)
- First year students (1)
- Flipped classroom (1)
- Fraktografie (1)
- Fraktographie (1)
- High - temperature corrosion (1)
- High alloyed steel (1)
- High alloyed steels (1)
- High temperature corrosion (1)
- Hydrogen (1)
- Injection (1)
- Lebensdauer (1)
- Lecture videos (1)
- Lehrfilm (1)
- Lehrfilmformate (1)
- Micromechanical model (1)
- Microstructure evolution (1)
- Nickel based coatings (1)
- Online (1)
- Online teaching (1)
- Oxide scale (1)
- P92 (1)
- Pipelines (1)
- Pitting (1)
- Protective coating (1)
- REM (1)
- Roughness (1)
- Schadensprävention (1)
- Sibayak (1)
- Silver nanoparticle (1)
- Sol-gel coating (1)
- Starch (1)
- Starch nanoparticle (1)
- Storage (1)
- Surface (1)
- TEM (1)
- Tempered Martensite Ferritic Steels (1)
- ToF-SIMS (1)
- Topografie (1)
- laser cladding (1)
- Öffentliche Sicherheit (1)
Organisationseinheit der BAM
- 5 Werkstofftechnik (31)
- 5.1 Mikrostruktur Design und Degradation (31)
- 7 Bauwerkssicherheit (14)
- 7.6 Korrosion und Korrosionsschutz (14)
- 5.2 Metallische Hochtemperaturwerkstoffe (2)
- 5.5 Materialmodellierung (2)
- 6 Materialchemie (2)
- 9 Komponentensicherheit (2)
- 9.0 Abteilungsleitung und andere (2)
- 5.6 Glas (1)
This work examined the droplet corrosion of CO2 pipeline steels caused by impurities in CO2 supercritical/dense phase at 278 K, simulating the underground transport condition. The wetting properties of carbon steels (X52 and X70) as well as martensitic steel UNS S41500, and superaustenite UNS N08031 were studied by contact angle measurement, revealing reactive wetting behavior of carbon steels. Exposure tests with CO2 saturated water droplet on steel surface showed that the impurities (220 ppmv SO2 and 6700 ppmv O2) diffused into the droplet and then reacted with metal coupons in supercritical/dense phase condition, forming the corrosion product instantly during pumping process. Due to the active wetting behavior, the carbon steels suffered from heavily attack, while negligible corrosion product was observed in cases of martensitic steel UNS S41500 and superaustenite UNS 08031 coupons. Condensation experiments that were carried out on fresh polished coupons in CO2 with 1200 ppmv H2O showed that the formation and aggregation of droplet is dependent on the presence of impurities. Without SO2 and O2, the same concentration of H2O did not cause observable corrosion process after a week of exposure. With 220 ppmv SO2 and 6700 ppmv O2 even low water concentration (5-30 ppmv) still resulted in heterogeneous nucleation and subsequent growth of droplets, leading to corrosive process on carbon steel surface albeit to a lesser extent.