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为了提高SISI304不锈钢表面特性,通过SEM、辉光放电光谱仪和磨损测试机研究了矿用SISI304不锈钢表面Cu-N渗镀层的组织、元素含量和磨损特性。结果表明:Cu-N渗镀处理后,不锈钢表层生成了一层致密连续的复合渗镀层,渗层上未出现明显的裂纹或孔洞,形成了整齐致密的表面结构。Cu-N渗镀层包含了Cu沉积层与扩散层两部分,两层间具有明显分界。基体存在明显较宽与较深的磨损痕迹,同时在滑动方向上生成了黑色粘附物。Cu-N共沉积后,生成了由小颗粒物组成的具有高硬度的致密渗层,磨损方式为磨粒磨损。生成的S相层对犁沟变形产生了明显的抑制作用。
In order to improve the surface properties of SISI304 stainless steel, the microstructure, element content and wear characteristics of Cu-N coating on the surface of SISI 304 stainless steel were studied by SEM, glow discharge spectrometer and wear tester. The results show that a dense and continuous composite percolation layer is formed on the surface of stainless steel after Cu-N plating. No obvious cracks or holes appear on the surface of the stainless steel, resulting in a neat and dense surface structure. The Cu-N diffusion coating consists of two parts, Cu deposit and diffusion layer, with obvious demarcation between two layers. The substrate has significantly wider and deeper wear marks, with the formation of black adherent in the sliding direction. Cu-N co-deposition, the formation of small particles composed of a dense layer of high hardness, wear way for abrasive wear. The generated S-phase layer has a significant inhibitory effect on furrow deformation.