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.

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.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

Available for download on Friday, March 25, 2022

Published Version

Share

COinS