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Effect of pH on corrosion behavior of 316L stainless steel in hydrogenated high temperature water
Author(s) -
Wang Jiazhen,
Wang Jianqiu,
Ming Hongliang,
Zhang Zhiming,
Han EnHou
Publication year - 2018
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201709761
Subject(s) - corrosion , materials science , dissolution , oxide , metallurgy , high temperature corrosion , chemical engineering , engineering
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.