SiC纳米粒子对纳米硫化物等离子涂层摩擦学特性的影响

The Effecting of containedo SiC on The Tribological Properties of Plasma Spraying Sulphide Coatings

利用等离子喷涂技术在GCr15钢表面制备了含不同比例之SiC的FeS纳米-亚微米结构硫化物固体润滑涂层。在SRV型摩擦磨损试验机上测试了涂层在无润滑不同温度条件下的摩擦学性能。利用扫描电子显微镜观察分析了涂层的形貌。结果表明，FeS纳米-亚微米硫化物涂层在加入一定比例的SiC纳米颗粒后，可以降低硫化物涂层的摩擦系数，提高涂层的耐磨性。在中低温（3500c以下），当SiC含量达到10％～20％时，涂层摩擦系数降低10％以上，耐磨性提高20％以上。

Nano-and submicron-structured sulphide coatings contained different content of SiC was deposited by atmospheric plasma spraying on GCr15 steel. The friction and wear properties of the coatings were investigated on SRV friction and wear tester under different temperatures. The microstructure, phase composition of the coatings were characterized with SEM. It was found that the SiC can reduce the friction coefficient, improve the wear properties of nano-and submicron-structured sulphide coatings. Under 350 ℃, when the content of SiC is during 10% to 20%, the friction coefficient of the nano-and submicron-structured coatings was reduced more than 10% and the wear resistance was improved more than 20%.