增强体成分对表面复合材料摩擦特性的影响

Effect of Reinforcement Composition on Friction Property of Surface Composite

使用碳化钨和高碳铬铁为主要增强体,采用铸造方法制备了3种不同成分的表面复合材料,研究了增强体成分对表面复合材料摩擦特性的影响。结果表明:碳化钨改变了表面复合层组织中碳化物的形态和相对数量,适量的碳化钨可显著提高表面复合材料的耐磨性,但含量过高反而使表面复合材料的耐磨性有所降低。

Using cast tungsten carbide and high carbon ferrochromium as main reinforcements, three kinds of surface composites with different compositions were prepared by casting method. Effect of reinforcement composition s on the friction property of the surface composite was investigated. The results show that the shape and relative quantity of carbide in the microstructure of surface layer is changed by tungsten carbide. Meanwhile, the right amount of tungsten carbide can significantly improve the wear resistance of the surface composites. On the contrary, the wear resistance of surface composite is reduced with an excessive tungsten carbide.