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中文摘要：
以商用硅粉、碳粉、钛粉以及少量的铝粉为原料,利用放电等离子烧结技术原位反应制备了Ti3SiC2-SiC复合材料.利用盘销式摩擦磨损实验机测试了Ti3SiC2-SiC复合材料的耐摩擦磨损性能.结果表明：随着SiC含量的增加,材料相对于硬化钢的摩擦系数和磨损系数均呈下降趋势,这表明SiC的引入提高了复合材料的抗摩擦磨损性能.Ti3SiC2单相材料摩擦系数在0.8～1.0之间,而Ti3SiC2-40vol%SiC复合材料在稳态下的摩擦系数达到了0.5,Ti3SiC2-40vol%SiC复合材料相对于Ti3SiC2单相材料的磨损系数下降了一个数量级.Ti3SiC2-SiC复合材料的高抗磨损性归因于磨损类型的改变以及SiC良好的抗氧化性能.
英文摘要：
Ti3SiC2-SiC composites were in situ fabricated by spark plasma sintering technique from the raw powders of Ti,Si,C and small amounts of Al.Pin-disk friction and wear tests were conducted on Ti3SiC2-SiC composites.Testing results indicate that the friction coefficients and wear rates decrease with the increasing SiC contents for the Ti3SiC2-SiC composites against hardened steel,which indicates that the addition of SiC improves the friction and wear resistance of Ti3SiC2-SiC composites.The friction coefficient of Ti3SiC2 is a relatively stable value ranging from 0.8 to 1.0,while that of Ti3SiC2- 40vol%SiC composites displays minimum value of 0.5 at stable state.The wear rates decrease one order of magnitude for Ti3SiC2-40vol%SiC compared with monolithic Ti3SiC2.The improvement of the wear resistance of Ti3SiC2-SiC composites is due to the wear mechanism transition and good anti-oxidation of SiC.
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