Influence of vacuum heat treatment on structure and micro-hardness of electroless Ni-P-SiC composite coating

来源期刊：中国有色金属学报(英文版)2007年增刊第1期(Part ⅡB)

论文作者：龙士国 马增胜 胡文彬 周益春

文章页码：874 - 877

Key words：electroless Ni-P-SiC composite coating; vacuum heat treatment; micro-hardness; X-ray diffraction

Abstract: The electroless Ni-P-SiC composite coatings were prepared and the influence of vacuum heat treatment on its structure and properties was analyzed. The Ni-P-SiC composite coatings were characterized by morphology, structure and micro-hardness. The morphology and structure of the Ni-P-SiC composite coatings were studied by scanning electron microscopy (SEM) and X-ray diffractometry (XRD), respectively. A great deal of particles incorporation and uniform distribution were found in Ni-P-SiC composite coatings. XRD results show a broad peak of nickel and low intensity SiC peaks present on as-deposited condition. Micro-hardness of as-deposited Ni-P-SiC composite coatings is improved greatly, and the best micro-hardness is obtained after heat treatment in a high vacuum at 400 ℃.

基金信息：Scientific Research Fund of Hunan Provincial Education Department
Fok Ying Tong Education Foundation of Ministry of Education