颗粒含量对化学镀Ni-P-SiC复合镀层形貌和性能的影响

Influence of particle content on morphology and properties of Ni-P-SiC chemical composite plating coating

采用化学共沉积的方法在Q235钢表面制备了Ni-P-SiC复合镀层,并研究了SiC颗粒含量对复合镀层表面形貌、沉积速率、显微硬度和磨损性能的影响。研究结果表明,Ni-P-SiC复合镀层表面平整,碳化硅硬质颗粒分布均匀。随着SiC颗粒含量的增加,复合镀层的沉积速率和显微硬度先增大后减小;当SiC含量为6 g/L时,沉积速率最快且磨损量最小。

Ni-P-SiC composite plating coating was prepared on the surface of Q235 steel by chemical coprecipitation method, and then the influence of SiC particle content on the morphology, precipitation velocity, micro-hardness and abrasion resistance of the coating were analyzed. The results indicated that the surface of Ni-P-Si C coating was smooth and SiC particles uniformly distributed on the coating surface. As the content of SiC particles increased, the precipitation rate and micro-hardness of coating increased first and then decreased. While Si C content was 6 g/L, the precipitation rate was the highest and the abrasion was the least.