摘要
通过正交实验对镁合金植酸处理工艺进行优化,并通过极化曲线、电位-时间曲线对镁合金植酸转化膜的耐腐蚀性能进行研究,采用金相显微镜对转化膜的微观形貌进行观察。结果表明,植酸转化膜耐腐蚀性能的工艺影响因素排序为:处理时间>温度>浓度>溶液pH值。AZ91D镁合金植酸转化膜具有良好的耐腐蚀性能,其自腐蚀电流密度小于铬酸盐转化膜,植酸表面处理技术有望代替对环境污染严重的铬酸盐处理技术。
In order to prepare a conversion coating on AZ91D magnesium alloy with phytic acid, the process parameter was optimized through an orthogonal experiment. The coating corrosion resistance was studied with the electrochemistry technology of polarization curve and E-t curve, and the coating micro-morphology was observed with metalloscope. To the corrosion resistance, the most important factor in orthogonal experiment is the immersing time period, and the second is solution temperature, as well as the third and...
出处
《兵器材料科学与工程》
CAS
CSCD
2009年第2期4-8,共5页
Ordnance Material Science and Engineering
基金
中国博士后科学基金(No.20070420772)
广东省自然科学基金(No.7010404)
关键词
镁合金
化学转化膜
植酸
耐蚀性
magnesium alloys
chemical conversion coating
phytic acid
anti-corrosion
