纳米TiC颗粒增强导卫板表面合金的耐磨性能  

Wear-resistance of Surface Alloy in Guide Plate Strengthened by Nanometer TiC Particles

作　　者：路王珂[1] 谢敬佩[1] 邵星海[1] 张银娣[1] 王行[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023

出　　处：《河南科技大学学报（自然科学版）》2014年第1期1-3,8,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省国际科技合作基金项目(084300510006);河南科技大学博士科研基金项目(2008bs025)

摘　　要：将改性纳米TiC通过铸渗工艺加入到导卫板的表面合金层中,可以提高导卫板的性能。运用扫描电子显微镜和透射电子显微镜等分析手段,结合硬度和耐磨性能测试结果,得出以下结论:表面合金层由奥氏体和M7C3型碳化物组成,碳化物呈杆状或颗粒状。加入改性纳米TiC粉末可以优化碳化物的分布形态,增加合金层的硬度,并提高其干摩擦条件下耐磨性能。当铸渗剂中加入质量分数为1.5%的纳米TiC后,合金层具有最好的微观组织和性能。With the help of the traditional sand mold casting infiltration process,nanometer TiC was added into surface alloy layer in guide plate,and the performance was improved. Microstructure was analyzed by using SEM and TEM,and performances were measured by hardness test and wear test. The experiment results show that the layer is constituted by austenitic and M 7 C 3 carbides,and the shape is granular or rod in the carbide. With nanometer TiC particles added,the surface alloy has better microstructure,hardness and wear resistance. The microstructure and performance are best with quality fraction 1. 5% of the nanometer TiC powder being added into casting infiltration agent.

关 键 词：纳米TIC 表面合金 微观组织 耐磨性 

分 类 号：TB36[一般工业技术—材料科学与工程]