Title
Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures
Publication Date
3-25-2020
Department
Materials Science and Engineering; Electrical and Computer Engineering; Chemistry; Ames Laboratory; Center for Nondestructive Evaluation (CNDE)
Campus Units
Materials Science and Engineering, Electrical and Computer Engineering, Chemistry, Ames Laboratory, Center for Nondestructive Evaluation (CNDE)
OSTI ID+
1637487
Report Number
IS-J 10245; BNL-216099-2020-JAAM
DOI
10.1016/j.corsci.2020.108598
Journal Title
Corrosion Science
Volume Number
171
First Page
108598
Abstract
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. 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.
DOE Contract Number(s)
SC0012704; NE0008823; 1917467; 1940055; AC02-07CH11358
Language
en
Department of Energy Subject Categories
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Publisher
Iowa State University Digital Repository, Ames IA (United States)
