电刷镀MoS2一C复合镀层摩擦学性能研究

本资料包含pdf文件1个，下载需要1积分

MoS2-C composite plating with thickness about 100/~m was brushed on GCr15 substrate to improve the tribological properties. The surface morphology, composition, structure and microhard- ness were analyzed by using SEM, XPS and HV-1000. The tribological properties of this composite plating were tested by MSTS-1. The results show that nanoparticles in composite plating reduce the grain size and improve the strength of this plating through effects of dispersion strengthening and fine crystalline strengthening. The combination plating has good trihological properties and the friction co- efficient decreases with the increase of sliding velocity and normal load, wear rate of this plating as- cends with the increase of load while curves of wear rate do not fluctuate with variation of sliding ve- locity.采用纳米复合电刷镀技术在GCrl5基体上制备了添加纳米石墨颗粒的镍基MoS2-C复合刷镀层，利用扫描电子显微镜、XPS光电子能谱仪以及HV-1000显微硬度仪对镀层的微观结构与成分组成进行了分析，利用MSTS-1摩擦磨损试验机对镀层的摩擦学性能进行了评估。结果表明：添加的纳米颗粒在镀层中弥散分布并与基质金属紧密结合，细化了镀层的晶粒尺寸，改善了镀层的沉积效果。制备的复合镀层摩擦学性能优异，实验表明：随着法向载荷的增大，镀层的摩擦因数逐渐降低而磨损率相应升高；随着滑动速率的增大，其摩擦因数降低而磨损率未出现明显变化。