摘要
采用硝酸氧化法在AZ 91D镁合金表面形成一层具有较好耐蚀性能的氧化膜。采用扫描电子显微镜对镁合金氧化层的微观形貌进行观察分析,系统讨论了活化时间和氧化时间对氧化层表面微观形貌的影响。结果表明:在活化时间为0.5min,氧化时间为2 min的条件下得到的氧化层表面均匀、完整,具有较好的耐点滴实验性能。
An oxide film with good corrosion resistance was formed on AZ 91D magnesium alloy surface by nitric acid oxidation process.The micro-morphology of the oxide film on the magnesium alloy was analyzed and observed with scanning electron microscope.The effects of activation and oxidation time on the micro-morphology of the surface conversion film were systematically discussed.The results show that the surface of the oxide film formed when activation time is 0.5 min and oxidation time 2 min is uniform and integral,and is more resistant to dropping corrosion test.
出处
《电镀与环保》
CAS
CSCD
北大核心
2011年第2期31-32,共2页
Electroplating & Pollution Control
