用等离子喷涂法成功制备了SiCp/FeS复合涂层,SiC颗粒尺寸为纳米级, 均匀分布于FeS基体, 涂层和40Cr钢基体结合良好. 研究了FeS涂层和SiCp/FeS复合涂层的摩擦学性能. 结果表明, SiCp/FeS复合涂层兼具优良的减摩性能和耐磨性能. 在干摩擦条件下, 掺入质量分数为0.2和0.3的纳米SiC颗粒时, 摩擦系数和FeS涂层接近, 但表面磨损体积显著降低, 降幅可达1个数量级; 油润滑条件下, SiCp/FeS复合涂层的摩擦系数低于FeS涂层, 复合涂层具有比FeS涂层更佳的减摩性能.
FeS/SiC composite coatings have been successfully produced by plasma spray technique. SiC particles with nano-scale are uniformly distributed in FeS matrix. There is a good bond between the coatings and 40Cr steel substrate. The tribological properties of FeS coating and FeS/SiC composite coatings have been investigated. The results show that FeS/SiC composite coatings have good antifriction and wear resistance properties. The friction coefficients of the composite coatings, mixed with nano SiC particles in weight fraction 0.2 and 0.3, are almost same as that of FeS coating under dry sliding, but the wear volume of them is remarkably decreased over the range of an order of magnitude. In oil lubrication, the friction coefficient of FeS/SiC composite coatings is smaller than that of FeS coating. So the composite coatings have superior antifriction property in the case.
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