汽车用锌-钴合金的制备及其耐蚀性的研究  

Investigation on Preparation and Corrosion Resistance of Zn-Co Alloys for Automobile

作　　者：张斌[1] 李国宾[2] 

机构地区：[1]顺德职业技术学院,广东佛山528300 [2]大连海事大学,辽宁大连116026

出　　处：《电镀与环保》2017年第4期32-34,共3页Electroplating & Pollution Control

基　　金：2014年广东省国家金属材料近净成形重点实验室研究项目(2014-KJZX0061)

摘　　要：在汽车用软钢上电沉积制备锌-钴合金,并研究了沉积电位对锌-钴合金的成分、厚度及耐蚀性的影响。研究表明:锌-钴合金的电沉积过程属于异常共沉积。钴的电沉积属于扩散控制,沉积电位越负,锌-钴合金中钴的质量分数越低。在-1.8V下制备的锌-钴合金表面致密,具有优异的耐蚀性,其中钴的质量分数为12.5%。Zn-Co alloys were prepared on soft steel for automobile by electrodeposition. Influence of electrodeposition potential on the composition, thickness and corrosion resistance of Zn-Co alloys was investigated. Research showed that electrodeposition of Zn-Co alloys belong to anomalous codeposition. Electrodeposition of cobalt was based on diffusion controlling, the mass fraction of cobalt in Zn-Co alloys decreased extremely with electrodeposition potential moving more negative. The Zn-Co alloys obtained at -1.8 V possessing dense surface and excellent corrosion resistance, the mass fraction of cobalt in Zn-Co alloys was 12.5 %.

关 键 词：锌-钴合金 软钢 耐蚀性 

分 类 号：TQ153[化学工程—电化学工业]