The corrosion of pure Mg accelerated by haze pollutant ammonium sulphate

被引：43
作者：
Cao, Fuyong [1 ]
Zhao, Chen [1 ]
Song, Guang-Ling [1 ]
Zheng, Dajiang [1 ]
机构：
[1] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Coll Mat, Ctr Marine Mat Corros & Protect, 422 S Siming Rd, Xiamen 361005, Peoples R China
来源：
CORROSION SCIENCE | 2019年 / 150卷
基金：
中国国家自然科学基金;
关键词：
Magnesium; Ammonium; Polarization; Potentiostatic; Alkaline corrosion; ATMOSPHERIC CORROSION; MAGNESIUM ALLOY; AL-ALLOYS; AZ31; MECHANISM; FILM; MORPHOLOGY; PARTICLES; BEHAVIOR; OXIDES;
D O I：
10.1016/j.corsci.2019.01.042
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of pure Mg in NH4+-containing alkaline solutions was studied by immersion test, electrochemical methods, morphology observation and corrosion product analysis. The results showed that the corrosion of Mg was dramatically accelerated by NH4+, resulting in a thick and loose Mg(OH)(2) corrosion product film formed in the NH4+ containing alkaline solutions. It was proposed that the NH4+ could dissolve the relatively protective MgO layer in the corrosion product film, providing a path for the solution to reach the substrate and facilitating the corrosion of Mg.
引用
收藏
页码：161 / 174
页数：14
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