标题: Chloride impurity induced corrosion of nickel anode and its protection in molten Li2CO3-Na2CO3-K2CO3<

作者: Wang, PL (Wang, Peilin); Du, KF (Du, Kaifa); Tang, MY (Tang, Mengyi); Yin, HY (Yin, Huayi); Wang, DH (Wang, Dihua)

来源出版物: CORROSION SCIENCE卷: 196文献号: 110027 DOI: 10.1016/j.corsci.2021.110027出版年: MAR 2022

摘要: It is well-known that Cl- can cause localized corrosion of metal in aqueous solutions, but its effect on material corrosion under anodic polarization in molten salts is less known. Herein, the effect of Cl- on the stability of nickel anode in molten Li2CO3-Na2CO3-K2CO3 was investigated. There existed a critical corrosion concentration of Cl- (0.2 mol% at 650 ?), above which serious corrosion of nickel anode took place. Cl- reduced the compactness and adherence of oxide scales. It was found that the addition of CaCO3 can effectively protect nickel anode from Cl- induced corrosion by increasing the electrolyte basicity.

作者关键词: Nickel; Molten salts; Anodic films; High temperature corrosion; Pitting corrosion

KeyWords Plus: HIGH-TEMPERATURE OXIDATION; INERT ANODE; PASSIVITY BREAKDOWN; REDUCTION; BEHAVIOR; FE; NI; OXYGEN; ALLOY; CO2

地址: [Wang, Peilin; Du, Kaifa; Tang, Mengyi; Yin, Huayi; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

通讯作者地址: Wang, DH (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

电子邮件地址:wangdh@whu.edu.cn

影响因子：7.205