Investigation on Oxidation Behavior of Super304H and HR3C Steel in High Temperature Steam from a 1000 MW Ultra-Supercritical Coal-Fired Boiler

Energies

Yungang Wang¹  Min Xue¹  Qinxin Zhao¹  Haidong Ma¹  Jingjing Li² 

[1] Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China;Xi’an Special Equipment Inspection Institute, Xi’an 710065, China;

关键词: stainless steel;    Super304H;    HR3C;    steam oxidation;    ultra-supercritical boiler;   

DOI  :  10.3390/en12030521

来源: DOAJ

【 摘 要 】

Oxidation behavior of Super304H and HR3C steel in high temperature steam from an ultra-supercritical coal-fired boiler was investigated in this paper. The results showed that the steam oxidized surface of Super304H ware composed of Fe₂O₃, Cr₂O₃ and FeCr₂O₄, the oxide scale had a thickness of 50⁻70 μm. In addition, the steam oxidized surface of HR3C ware composed of Fe₂O₃, the oxide scale was about 20μm in thickness and contained few pitting. The oxidation product layer of the two samples could be divided into two layers, including outer layer enriched O element and Fe element, and inner layer enriched O element and Cr element. Furthermore, oxide scale spalling was observed on the surface of Super304H sample.

【 授权许可】

Unknown