Title
Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures
Campus Units
Chemistry, Electrical and Computer Engineering, Materials Science and Engineering, Ames Laboratory, Center for Nondestructive Evaluation (CNDE)
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
7-15-2020
Journal or Book Title
Corrosion Science
Volume
171
First Page
108598
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
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Copyright Owner
Elsevier Ltd.
Copyright Date
2020
Language
en
File Format
application/pdf
Recommended Citation
Copeland-Johnson, Trishelle M.; Nyamekye, Charles K. A.; Gill, Simerjeet; Ecker, Lynne; Bowler, Nicola; Smith, Emily A.; and Rebak, Raul B., "Characterization of Kanthal APMT and T91 oxidation at beyond design-basis accident temperatures" (2020). Materials Science and Engineering Publications. 369.
https://lib.dr.iastate.edu/mse_pubs/369
Comments
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.