为了节省资源,降低成本并制备具有优异摩擦磨损性能的碳化物表面复合材料,采用原位反应方法制备了碳化钽/灰口铁(TaC/Fe)表面复合材料.通过扫描电镜(SEM)和磨损试验分析了其组织结构,重点研究了增强相颗粒TaC的形貌特征与分布特点,同时研究了该复合材料与45钢配副时的摩擦磨损特性,并分析了载荷对摩擦系数和磨损量的影响,分析了其摩擦磨损机理.结果表明:TaC/Fe复合材料增强层分为2层,组织结构均匀,表现出较典型的梯度复合特点；复合材料摩擦系数随载荷的增加逐渐降低,下降趋势逐渐变缓；复合材料磨损量随载荷的增加而下降,总体磨损量较小；复合材料的磨损机制主要包括黏着磨损、磨粒磨损、疲劳磨损、硬质颗粒的脆性断裂和剥落.
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