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Effect of Pre-Oxidation on the Steam Oxidation of Heat-Resistant Steel T92
- Source :
- High Temperature Materials and Processes, Vol 37, Iss 8, Pp 733-739 (2018)
- Publication Year :
- 2018
- Publisher :
- De Gruyter, 2018.
-
Abstract
- Effect of pre-oxidation on the steam oxidation of T92 heat-resistant steel at 650 °C was investigated. The results show that the mass gain and the oxide thickness of T92 sample with pre-oxidation treatment were lower than that of T92 sample after exposure in steam at 650 °C. The compact and discrete Cr-rich oxide which formed on the pre-oxidized specimen hindered ion diffusion, leading to the lower oxidation rate. The effect of pre-oxidation worked at the initial stage due to the protective Cr-rich layer formed in air gas. After a long time exposure in steam, the pre-oxidation influence decreased slowly and eventually disappeared. What’s more, the adhesion property of oxide scale was improved by pre-oxidation.
Details
- Language :
- English
- ISSN :
- 03346455 and 21910324
- Volume :
- 37
- Issue :
- 8
- Database :
- Directory of Open Access Journals
- Journal :
- High Temperature Materials and Processes
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1a8d12ae310e4f98b9ff688609815d06
- Document Type :
- article
- Full Text :
- https://doi.org/10.1515/htmp-2017-0037