Article
Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures
Corrosion Science
Document Type
Article
Disciplines
Publication Version
Accepted Manuscript
Publication Date
7-15-2020
DOI
10.1016/j.corsci.2020.108598
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.
Creative Commons License
Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International
Copyright Owner
Elsevier Ltd.
Copyright Date
2020
Language
en
File Format
application/pdf
Citation Information
Trishelle M. Copeland-Johnson, Charles K. A. Nyamekye, Simerjeet Gill, Lynne Ecker, et al.. "Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures" Corrosion Science Vol. 171 (2020) p. 108598 Available at: http://works.bepress.com/emily-smith/67/
This is a manuscript of an article published as Copeland-Johnson, Trishelle M., Charles KA Nyamekye, Simerjeet Gill, Lynne Ecker, Nicola Bowler, Emily A. Smith, and Raul B. Rebak. "Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures." Corrosion Science (2020): 108598. DOI: 10.1016/j.corsci.2020.108598. Posted with permission.