钢丝热浸镀Galfan合金镀层开裂的研究  

Research on the Cracking of Hot-dip Galfan Coating of Steel Wire

作　　者：杜安[1] 曹晓明[1] 马瑞娜[1] 范永哲[1] 石坚[1] 王凤华[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《材料导报》2010年第4期63-65,共3页Materials Reports

基　　金：河北省科学技术研究与发展计划项目(08275605D)

摘　　要：对钢丝热浸镀Galfan合金镀层的开裂进行了研究。采用SEM、EDS、XRD、TEM、XPS分别分析了镀层的组织形貌、相组成及元素的结合方式,并观察了镀层开裂及断口的组织形貌。结果表明,Glafan合金镀层中无明显合金过渡层,镀层中裂纹在晶界产生并沿晶界扩展。镀层晶界处的氧化物等杂质是造成镀层开裂的主要原因。Research on crack of hot-dip Galfan alloy coating of steel wire has been done. SEM, EDS, XRD, TEM, XPS are used to analysis the microstructure, phase components and bonding mode. Crack and fractography have been studied. The results show that transition layer with intermetallic compounds has not been found obviously. Cracks form in the grain boundary of the coating and propagate along the grain boundary. Oxide as impurity in the grain boundary is the main factor to generate crack in the coating.

关 键 词：热浸镀 开裂 微观组织 GALFAN合金 

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]