翟永杰,乔世杰,陆小龙,余鹏程,罗晓娣,许雪妮,顾玉栊,刘秀波

• 1:苏州大学机电工程学院
• 2:中国科学院兰州化学物理研究所固体润滑国家重点实验室

摘要(Abstract)：

以Ni60-h BN复合粉末为原料,采用激光熔覆技术在304不锈钢表面制备自润滑耐磨复合涂层,将复合涂层在600℃下分别保温1 h和2 h以研究热处理对该复合涂层力学性能的影响,分析了热处理前后涂层的组织结构、硬度、纳米压痕和摩擦学性能的变化及其机理。结果表明:未经热处理涂层的显微硬度和γ-(Ni,Fe)固溶体的硬度分别为641.1 HV0.5和5.09 GPa,而经过1 h和2 h热处理涂层的显微硬度和γ-(Ni,Fe)固溶体的硬度分别为701.2 HV0.5、7.20 GPa和652.4 HV0.5、3.77 GPa。热处理1 h涂层的摩擦系数为0.4,磨损体积为0.0130 mm3,相对未做热处理以及热处理2 h涂层具有较好的耐磨减摩性能,Si3N4对磨球表面光滑,无明显塑性变形,磨损机理为轻微磨粒磨损。

关键词(KeyWords)： 激光熔覆;热处理;纳米压痕;耐磨减摩

Abstract:

Keywords:

基金项目(Foundation): 江苏省自然科学基金(BK20141194,BK20131155);; 江苏省高端结构材料重点实验室开放基金(hsm1401)

作者(Author): 翟永杰,乔世杰,陆小龙,余鹏程,罗晓娣,许雪妮,顾玉栊,刘秀波

DOI: 10.13289/j.issn.1009-6264.2015.12.039

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