激光与光电子学进展, 2018, 55 (9): 091406, 网络出版: 2018-09-08   

激光熔覆NiAl-SiC复合涂层的组织与摩擦性能 下载: 862次

Microstructure and Tribological Performance of NiAl-SiC Composite Coating by Laser Cladding
作者单位
常州大学机械工程学院, 江苏 常州 213164
摘要
采用激光熔覆技术, 在1Cr17Ni2钢表面制备了不同含量SiC的NiAl-SiC复合涂层, 研究分析了熔覆层的物相、微观组织结构、化学成分和摩擦性能。结果表明, 熔覆层主要包含AlFe0.23Ni0.77和AlNi物相; NiAl-SiC复合涂层中存在微裂纹、空隙及脱落等缺陷; SiC质量分数为3%的熔覆层和基体的平均摩擦系数分别为0.731和1.260, 熔覆层的耐磨性优于基体的。
Abstract
The NiAl-SiC composite coatings with different SiC contents are prepared on the surfaces of 1Cr17Ni2 steels by the laser cladding technique, and the phases, microstructures, chemical compositions and friction properties of the cladding layers are investigated. The results show that the cladding layers mainly contain AlFe0.23Ni0.77 and AlNi phases. The NiAl-SiC composite coatings have some defects, such as micro cracks, voids and falling off. The average friction coefficients of the cladding layer with a SiC mass fraction of 3% and the substrate are 0.731 and 1.260, respectively, indicating that the wear resistance property of the cladding layer is superior to that of the substrate.
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吴王平, 刘剑文, 王辉, 王晓杰. 激光熔覆NiAl-SiC复合涂层的组织与摩擦性能[J]. 激光与光电子学进展, 2018, 55(9): 091406. Wu Wangping, Liu Jianwen, Wang Hui, Wang Xiaojie. Microstructure and Tribological Performance of NiAl-SiC Composite Coating by Laser Cladding[J]. Laser & Optoelectronics Progress, 2018, 55(9): 091406.

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