摘要
为了进一步提高镁合金转化膜防腐性能的影响，将铈基转化复合于在AZ31B镁合金植酸转化膜表面，制备了一种铈基一植酸复合转化膜，应用析氢实验、Tafel分析方法及SEM、EDS对AZ31B镁合金不同转化膜的防腐性能及表面微观结构及成份进行了研究。结果表明复合转化膜表面主要由C、O、P、Ce、Mg及Al元素所组成，复合转化膜相比于植酸转化膜及铈基转化膜具有更好的致密性，从而复合转化膜相比于植酸转化膜及铈基转化膜具有更好的防腐性能。
In order to further improve the corrosion resistance of conversion coating on magnesium alloy. A composite coating with a cerium conversion coating deposited on the phytic acid conversion coating was formed on AZ31B magnesium alloy. The anticorrosive performance, morphology and composition of different magnesium alloy conversion coatings were studied by hydrogen evolution method, Tafel, SEM and EDS. The results show that the composite coating is composed of O, C, P, Mg , Al and Ceo The composite coating has better uniform than phytic acid conversion coating and cerium conversion coating, so it has best corrosion resistance than phytic acid conversion coating and cerium conversion coating.
出处
《中国材料科技与设备》
2014年第2期11-14,共4页
Chinese Materials Science Technology & Equipment
基金
重庆市教委科学技术研究项目资助（KJ120809）
关键词
植酸
硝酸铈
镁合金
复合转化膜
防腐
Phytic acid
Cerium nitrate
Magnesium alloy
Composite conversion coating
Corrosion resistance
