Carburization behavior of FeCrAl alloy APMT and the critical role of pre-oxidation
Journal Article
·
· Corrosion Science
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Westinghouse Electric Company (United States)
The carburization behavior of bare and pre-oxidized APMT has been assessed after long-term graphite exposure at 1000 °C. Bare coupons formed a thick scale after graphite exposure due to carbon interaction and chromium-rich carbides were detected, as predicted from thermodynamic calculations. Additionally, pre-oxidation of APMT was conducted in air, and oxidation kinetics were measured through thermogravimetry. The oxide layer formed at 800 °C failed to prevent carburization. However, increasing the pre-oxidation temperature to 1200 °C produced an oxide layer with good resistance to carbon diffusion indicating that the alpha-alumina formed at high temperatures is key in preventing carburization of the material.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE)
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 2203404
- Report Number(s):
- LA-UR--23-20892
- Journal Information:
- Corrosion Science, Journal Name: Corrosion Science Vol. 224; ISSN 0010-938X
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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