钒铬表面复合层的冲击磨损性能研究  

Study on impact wear properties of vanadium-chromium surface composite layer

作　　者：赵士阳[1] 张永振[1] 

机构地区：[1]河南科技大学材料摩擦学重点实验室,河南洛阳471003

出　　处：《矿山机械》2009年第16期26-28,共3页Mining & Processing Equipment

基　　金：国家973项(2007CB607603)

摘　　要：采用消失模铸渗工艺在ZG310—570表面形成钒铬复合层,采用MLD-10型动载磨料磨损试验机研究了表面复合层的冲击磨损性能,并用ISM-5600型扫描电镜观察了复合渗层的磨损形貌,分析了复合渗层的磨损机理。结果表明:表面复合层的耐磨性远远高于基体材料的耐磨性,且随着渗剂中钒含量的增加,复合层的耐磨性降低,其磨损机理主要是裂纹的萌生、扩展与连接。Vanadium-chromium composite layer is formed on the surface of ZG310-570 by LFC-Penetration process, lmpact wear properties of the surface composite layer are studied by the MLD-IO dynamic load grain-abrasion wear testing machine. With the help of JSM-5600 SEM, the wear feature of the surface composite are observed and the wear mechanism is analyzed. The result shows that the wear resistance of surface composite layer is better than that of the matrix. And the wear resistance of composite layer decreases with the increase of vanadium content. The wear mechanism of composite layer is the generation, expansion and connection of the crack.

关 键 词：消失模铸渗 表面复合层 冲击磨损 磨损机理 

分 类 号：TG115.58[金属学及工艺—物理冶金]