WC-Al_2O_3复合材料摩擦磨损性能  

Friction and wear properties of WC-Al_2O_3 composite

作　　者：骆祎岚[1] 刘秀蕊 董威威[1] 朱世根[1] LUO Yilan LIU Xiurui DONG Weiwei ZHU Shigen(Engineering Research Center of Advanced Textile Machinery of the Ministry of Education, College of Mechanical Engineering, Donghua University, Shanghai 201620, China)

机构地区：[1]东华大学机械工程学院纺织装备教育部工程研究中心,上海201620

出　　处：《复合材料学报》2016年第11期2584-2590,共7页Acta Materiae Compositae Sinica

基　　金：上海市重点学科建设项目(BO62)

摘　　要：在HT-1000型高温摩擦磨损实验仪上采用球面接触形式对WC-Al_2O_3复合材料进行滑动摩擦磨损实验,研究了WC-Al_2O_3复合材料从常温25℃到600℃温度条件下的摩擦磨损特性,并与WC-6Co进行对比。采用SEM、超景深显微镜及XRD对磨痕表面微观形貌及物相进行观察和分析。结果表明,在常温时,WC-Al_2O_3复合材料的摩擦系数较小,摩擦磨损性能较好。当温度升至600℃时,WC-Al_2O_3复合材料磨痕表面逐渐有氧化物生成,摩擦系数减小,磨损机制由低温下的磨粒磨损为主转化为氧化磨损,WC-Al_2O_3复合材料摩擦磨损性能较差。Friction and wear properties of WC-Al_2O_3 composite,which slid against WC-6Co,were studied by slide friction and wear experiment of spherical surface contact friction mode on HT-1000high-temperature friction and wear test instrument within the temperature range of 25℃to 600℃.In additional,a comparison of WC-Al_2O_3 and WC-6Co was conducted.The micro morphologies of the worn surface and surface composition of the materials were analyzed by SEM,and ultra-depth microscope and XRD.The results show that the friction coefficient of WC-Al_2O_3 composite is smaller and the friction and wear property is better at room temperature.When the temperature increases to 600 ℃,the oxide formation is accelerated on the surface of WC-Al_2O_3 composite grinding marks,the friction coefficient decreases remarkably.At the same time,wear mechanism change to oxidation wear from abrasive wear,also friction and wear properties are slightly worse.

关 键 词：摩擦磨损 WC-Al2O3 WC-6Co 微观形貌 磨损机制 

分 类 号：TB332[一般工业技术—材料科学与工程]