有机胺类添加剂对热浸镀锌板钼酸盐钝化膜耐蚀性能的影响  

INFLUENCE OF AN ORGANIC AMINE ADDICTIVE ON CORROSION PERFORMANCE OF MOLYBDATE PASSIVE FILM FORMED ON HOT-DIPPING GALVANIZED STEEL

作　　者：吴成剑[1] 周婉秋[1,2] 许淳淳[1] 张召恩[3] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]沈阳师范大学化学与生命科学学院,沈阳110034 [3]首钢技术研究院技术中心,北京100041

出　　处：《腐蚀科学与防护技术》2009年第4期377-379,共3页Corrosion Science and Protection Technology

摘　　要：应用电化学极化曲线和交流阻抗方法,研究了一种有机胺类添加剂对于热浸镀锌板钼酸盐转化膜耐腐蚀性能的影响;用扫描电子显微镜观察了不同添加剂浓度条件下形成的转化膜的微观形貌.结果表明,在一定范围内,添加剂浓度的增加有利于转化膜的形成,使转化膜的耐蚀性增强.当添加剂浓度超过一定数值时,由于转化膜形成过程较快,使得膜附着力下降并发生开裂,导致膜的保护作用降低.The influence of an organic amine addictive on corrosion performance of molybdate passive film formed on hot-dipping galvanized steel （HDGS）was investigated by using potentiodynamic polarization curves and EIS technique. Scanning electron microscopy was used to observe the morphology of the film. It was found that the concentration increase of the addictive in a certain range was favorable to the formation of the conversion coating, and could improve corrosion performance of the film. When the addictive increased to a higher concentration,the film cracked due to the extremely quick reaction,which degradated the corrosion performance of molybdate passive film.

关 键 词：镀锌板 钼酸盐 转化膜 添加剂 

分 类 号：TG174.443[金属学及工艺—金属表面处理] TQ153.2[金属学及工艺—金属学]