Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures
Journal Article
·
· Corrosion Science
- Univ. of Iowa, Iowa City (United States). Dept. of Materials Science & Engineering
- Iowa State Univ., Ames, IA (United States). Dept. of Chemistry; Ames Lab., Ames, IA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science & Technology Dept. (NSTD)
- General Electric Research Lab., Schenectady, NY (United States)
Limited information is available on the oxidation mechanism of accident tolerant claddings (ATC) Kanthal APMT and T91 at the onset of beyond design-basis accident (BDBA) conditions. In this work, we characterized the surface of these ATC alloys after steam and air exposure at 1200 °C for 2 h, defining the oxidation mechanism. Thickness and composition were analyzed with microscopy, Raman spectroscopy, and synchrotron diffraction. Our results demonstrate that APMT forms a compact and homogeneous α-Al2O3 layer when exposed to air or steam. T91 forms a heterogeneous porous layer, containing a mixture of Cr- and Fe-based oxides, whose composition changes with the exposure environment.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-07CH11358; SC0012704; NE0008823
- OSTI ID:
- 1633642
- Alternate ID(s):
- OSTI ID: 1637487
OSTI ID: 1690129
- Report Number(s):
- IS--J-10,245
- Journal Information:
- Corrosion Science, Journal Name: Corrosion Science Journal Issue: C Vol. 171; ISSN 0010-938X
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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