电刷镀MoS_2-C复合镀层摩擦学性能研究  

Tribological Properties of Electric Brush MoS_2-C Combination Plating

作　　者：张森[1,2] 李国禄[1] 王海斗[2] 徐滨士[2] 马国政[2] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130 [2]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《材料工程》2013年第1期85-90,96,共7页Journal of Materials Engineering

基　　金：国家杰出青年科学基金(51125023);国家973计划项目(2011CB013405);北京市自然科学基金重大项目支持(3120001)

摘　　要：采用纳米复合电刷镀技术在GCr15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。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.

关 键 词：纳米颗粒 固体润滑 复合电刷镀 摩擦学性能 

分 类 号：TH117.3[机械工程—机械设计及理论]