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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。
The nano-composite brush plating technology was used to prepare a nickel-based MoS2-C composite brush coating with nano-graphite particles on a GCr15 substrate. The microstructure of the coating was characterized by scanning electron microscopy, XPS photoelectron spectroscopy and HV-1000 microhardness tester The composition and composition of the coating were analyzed. The tribological properties of the coating were evaluated by MSTS-1 friction and wear tester. The results show that the added nanoparticles dispersedly distributed in the coating and closely combined with the matrix metal, which refined the grain size of the coating and improved the deposition effect of the coating. The tribological properties of the prepared composite coatings are excellent. The experimental results show that with the increase of the normal load, the friction coefficient of the coating gradually decreases and the wear rate increases accordingly. With the increase of the sliding velocity, the friction coefficient decreases and the wear rate Significant changes have taken place.