Volume 69, Issue 5 pp. 580-589
ARTICLE

Effect of pH on corrosion behavior of 316L stainless steel in hydrogenated high temperature water

Jiazhen Wang

Corresponding Author

Jiazhen Wang

Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang, 110016 P. R. China

Reactor Engineering Research Sub-Institute, Nuclear Power Institute of China, Sichuan, Chengdu, 610213 P. R. China

Correspondence

Jianqiu Wang, Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, Liaoning, P. R. China.

Email: [email protected]

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Jianqiu Wang

Jianqiu Wang

Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang, 110016 P. R. China

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Hongliang Ming

Hongliang Ming

Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang, 110016 P. R. China

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Zhiming Zhang

Zhiming Zhang

Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang, 110016 P. R. China

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En-Hou Han

En-Hou Han

Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang, 110016 P. R. China

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First published: 27 November 2017
Citations: 20

Abstract

The effect of pH on the corrosion behavior of 316L stainless steel (SS) was investigated. The film resistance decreases and the corrosion current density increases as the pH rises from 6.42 to 7.52 for 316L SS. The corrosion rate of 316L SS increases with increasing pH in hydrogenated high temperature water at 300 °C. Higher pH reduces the stability of the oxide films and accelerates the dissolution process of the oxides. It is recommended that a proper lower pH in hydrogenated high temperature water can mitigate the corrosion of structural materials.

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