摘要
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的作用是使腐蚀产物致密,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.
The corrosion behavior of Zn-Mn alloy （ containing 0.4mass% Mn） in a simulated solution for marine atmosphere environment （0. 1 mol/L NaCl ＋ 0. 1 mol/L Na2SO4 ＋ 0.01 mol/L NaHCO3 ） has been studied by potentiodynamic polarizations, scanning electron microscopy （SEM） and X-ray photoelectron spectroscopy analysis（XPS）. The results indicate that the main corrosion products of both Zn and Zn- 0. 4Mn alloy are zinc oxide （ ZnO ） and hydroxycarbonate （Zn5（CO3）2（OH）6）. However more hydroxycarbonate is detected in the out layer of corrosion films on Zn-0. 4Mn alloy. Mn can significantly increase the corrosion resistance of Zn through the mechanism that it can produce a more compact film and promote the formation of zinc hydroxycarbonate （Zn5（CO3）2（OH）6） a corrosion product with better protectiveness in the solution.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2008年第6期395-399,共5页
Corrosion Science and Protection Technology
基金
国家自然科学基金重大项目(No.50499336-4)
