Oxidation of low-alloy steel in high temperature steam and supercritical water

Naiqiang ZhangMOE’s Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing, China

Guoqiang YueMOE’s Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing, China

Fabin LvMOE’s Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing, China

Zhongliang ZhuMOE’s Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing, China

Hasan Izhar KhanMOE’s Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing, China

Hong XuMOE’s Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing, China;School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, ChinaCorrespondence[email protected]

Abstract

The oxidation behaviour of a low-alloy steel T22 was investigated by exposure to ordinary pressure steam (0.1 MPa), high-pressure superheated steam (8 MPa), and supercritical water (SCW) (25 MPa) at 600 °C for 1000 h. The results show the exposure pressure has a significant influence on weight gains and oxide scale morphologies. All the samples approximately obey near-parabolic oxidation kinetics. Some pores are found on the samples exposed to steam while severe cracks are formed in SCW. Further, the influence of steam pressure on the oxidation process is discussed in detail.

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Oxidation of low-alloy steel in high temperature steam and supercritical water

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Oxidation of low-alloy steel in high temperature steam and supercritical water

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