脉冲电镀Ni-SiC纳米复合镀层工艺与微观形貌

Process and Micromorphology of Ni-SiC Nano Composite Coating by Pulse Plating

采用脉冲电镀法制备了Ni-SiC(纳米)复合镀层,研究了脉冲参数对镀层中纳米颗粒含量和镀层显微硬度的影响。利用扫描电子显微镜和X射线衍射仪分析了镀层的显微形貌及纳米复合镀层的相组成。用显微硬度计测试了镀层的显微硬度。结果表明,脉冲电镀能获得晶粒度细小、致密、光亮、均匀且高硬度的复合镀层。

Ni-SiC nano composite coating was prepared by pulse plating. The influence of pulse parameters on nano-particles content and microhardness of the coating were researched in this paper. The surface morphology and phase structure of the coatings were analyzed by means of scanning electronic microscopy （SEM） and X-ray diffractometer, and its microhardness was determined by microhardness tester. The results show that the pulse plating can gain a compact, bright and uniform composite coating with fine grain and high hardness.