激光熔覆纳米金刚石减摩涂层研究
Study on Properties of Nano-diamond Anti-friction Layer Prepared by Laser Cladding
魏 刚1, 郭 玥2, 张镜斌1, 李延安1
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作者单位：1. 中船重工集团第十二研究所, 陕西 兴平 713102; 2. 中南大学 材料科学与工程学院, 湖南 长沙 410083
中文关键字：纳米金刚石； 激光熔覆； 减摩
英文关键字：nano-diamond; laser cladding; anti-friction
中文摘要：采用激光熔覆技术制备了纳米金刚石减摩涂层，对熔覆层的组织形貌、硬度、摩擦性能等进行了实验研究，探讨了熔覆层减摩机理。结果表明，熔覆层耐磨性能比基体提高61.4%；熔覆层中含有大量金刚石相，提高了熔覆层的硬度， 提高了熔覆层自润滑性及耐磨性，细化了熔覆层晶粒。
英文摘要：The nano-diamond anti-friction layer was prepared by laser cladding method. The microstructure, hardness and friction property of the cladding layer was studied and the anti-friction mechanism of the cladding layer was discussed. The results show that the wear resistance of the cladding layer is improved by 61.4% compared with the matrix. The hardness, self-lubricating of the cladding is enhanced by adding nano-diamond into the Fe based cladding powders and the grain of the cladding layer is refined.