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Comparison of Microstructural Evolution of Oxides Formed on F91 Martensitic Steel Upon Breakaway Oxidation at 700 °C in Air and CO2

Authors
  • Zheng, Yu1
  • Shirani Bidabadi, Mohammad Hassan1
  • Wang, Guofeng2
  • Zhang, Chi1
  • Chen, Hao1
  • Yang, Zhi-Gang1
  • 1 Tsinghua University, Key Laboratory of Advanced Materials, Ministry of Education, Collaborative Innovation Center of Advanced Nuclear Energy Technology, School of Materials Science and Engineering, Beijing, 100084, People’s Republic of China , Beijing (China)
  • 2 University of Pittsburgh, Department of Mechanical Engineering and Materials Science, Pittsburgh, PA, 15261, USA , Pittsburgh (United States)
Type
Published Article
Journal
Oxidation of Metals
Publisher
Springer US
Publication Date
Jan 11, 2019
Volume
91
Issue
3-4
Pages
463–482
Identifiers
DOI: 10.1007/s11085-019-09893-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

The microstructure of the oxides formed on F91 steel upon breakaway oxidation in air and CO2 at 700 °C was characterized and compared. It was observed that the Cr-rich corundum layer became humped and disrupted upon breakaway oxidation in air in the first stage. In contrast, spinel was found to form in CO2 without any humping of the Cr-rich layer upon breakaway oxidation. Whether or not the humping and disrupting of the Cr-rich layer were present was related to the form of oxide. Specifically, corundum oxide was facile in air, whereas spinel oxide was facile in CO2.

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