一种多颜色锆基转化膜在冷轧板上的耐腐蚀性  

Corrosion resistance of diverse colored zirconia conversion coating on cold rolled steel

作　　者：王耀祖[1] 张宏[1] 徐同宽[1] 曲丰作[1] 崔励[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2016年第4期259-263,共5页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅科学研究项目(L2011279);辽宁省自然科学基金资助项目(201202012);住房和城乡建设部科学技术计划项目(2014-K4-034)

摘　　要：常温下经过不同时间的锆化处理,在冷轧板(CRS)表面制得一层淡黄色、金黄色和蓝紫色等不同颜色的转化膜。采用扫描电镜和能谱研究不同颜色转化膜的形貌和元素组成,转化膜主要由C、O、Fe、Zr和F等元素组成。通过电化学阻抗谱(EIS)研究不同颜色转化膜的电化学性能,通过百格试验和中性盐雾试验(NSS)检测粉末涂装后漆膜的附着力和耐腐蚀能力;结果显示,银白色裸板,淡黄色、金黄色、蓝紫色转化膜均具有一定的耐腐蚀能力,不同颜色转化膜可以显著提高冷轧板与粉末漆层的附着力和涂装之后冷轧板的抗腐蚀能力,其中金黄色转化膜表现出更加优异的耐腐蚀能力,其500h中性盐雾实验评级达到0级。Conversion coatings with diverse colors such as pale yellow, golden yellow and violet could be got on CRS based on the zirconium treatment at room temperature. The SEM and EDS analysis showed that the conversion coatings were mainly consisted of C, O, Fe, Zr and F elements. Electrochemical impedance spectroscopy （EIS） was applied to investigate the electrochemical performance of the conversion coatings and the cross cut test and neutral salt spray test （NSS） were used to characterized the corrosion resistance properties of powder coating. The results showed that conversion coatings of silver bare sample, pale yellow, golden yellow and violet had excellent corrosion resistance properties compared with the bare CRS, and could remarkably improve the abilities of adhesion and resistance to corrosion. The golden yellow had the best corrosion resistance according to zero degree of 500 h NSS among the conversion coatings.

关 键 词：锆化膜 耐腐蚀 冷轧板 表面前处理 

分 类 号：TG174.4[金属学及工艺—金属表面处理]