摘要
采用化学共沉淀法制备一种环境友好、可以吸附腐蚀性阴离子、释放缓蚀剂的钒酸盐插层锌铝水滑石新型颜料用于镁合金的抗腐蚀保护。采用N2吸附-脱附等温线,ICP分析以及极化曲线的方法研究此水滑石的吸附和抗腐蚀机理;通过盐雾试验检验钒酸盐插层锌铝水滑石/环氧涂层对镁合金的抗腐蚀保护性能。结果表明:该材料防腐蚀性能优良,可以为镁合金基体提供阳极钝化和屏障式双重保护功能。
As an environmental-friendly new style pigment for Mg alloy corrosion protection, decavanadate （[-V10O28]^6- ） interlayer Zn-Al hydrotalcite （Zn-Al-[-V10O28]^6- ） was prepared by co-precipitation method, which can absorb corrosive anion and release the inhibitor of [V10O28]^6- ion. The adsorption and anticorrosion mechanisms of the hydrotaleite were investigated by N2 adsorption-desorption, Inductively Coupled Plasma （ICP） and polarisation curves respectively. The corrosion protection properties for Mg alloy based on the Zn-Al-[V10 O28 ]^6-/epoxy coatings were investigated by salt spray testing. The results demonstrated that the material can afford doubly function of anodic passivity and barrier protection and had excellent corrosion resistant property.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2008年第12期30-33,共4页
Journal of Materials Engineering
基金
国家"863"发展计划资助项目(2006AA032511)
关键词
防腐
水滑石
离子吸附交换
镁合金
antieorrosion
hydrotalcite
absorb and ion-exchange
Mg alloy
