采用动电位极化、扫描电镜(SEM)和X光电子能谱分析(XPS)等技术研究了含0.4mass%Mn的Zn-0.4Mn合金在模拟海洋大气环境溶液(0.1 mol/L NaCl+0.1 mol/L Na2SO4+0.01 mol/L NaHCO3)中的腐蚀行为.结果表明,Zn和Zn-0.4Mn合金上的腐蚀产物均以ZnO和Zn5(CO3)2(OH)6为主,但Zn-0.4Mn表层有更多的Zn5(CO3)2(OH)6.Mn的作用足使腐蚀产物致密,并促进耐蚀腐蚀产物(Zn5(CO3)2(OH)6)的形成,从而显著提高Zn在此溶液中的耐蚀性能.
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