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- Title
Oxidation Behavior of Ferritic Steel T22 Exposed to Supercritical Water.
- Authors
Zhu, Zhongliang; Khan, Hasan Izhar; Cao, Qi; Zhang, Naiqiang
- Abstract
The oxidation tests of Ferritic Steel T22 exposed to supercritical water (SCW) at 540–620°C and 25 MPa was performed for up to 1000 h. The oxidation rate increased with increasing exposure temperature and time. Oxide films formed on T22 have a double-layered structure with an outer layer consisting of iron oxide and an inner layer consisting of spinel oxide. Numerous pores on the surface can be observed at the initial oxidation stage while they seemed to heal with increasing exposure time at 620°C. Cracks occurred along grain boundaries in the oxide scale when T22 exposed for 200 h at 620°C. The influence of time and temperature on the oxidation of Ferritic Steel T22 was discussed.
- Subjects
SUPERCRITICAL water; FERRITIC steel; OXIDE coating; IRON oxides; CRYSTAL grain boundaries
- Publication
High Temperature Materials & Processes, 2019, Vol 38, p476
- ISSN
0334-6455
- Publication type
Article
- DOI
10.1515/htmp-2018-0100