Investigation on friction and wear performance of laser cladding Ni-based alloy coating on brake disc
Investigation on friction and wear performance of laser cladding Ni-based alloy coating on brake disc
复制标题
制动盘激光熔覆镍基合金涂层摩擦磨损性能研究
DOI：
10.1016/j.ijleo.2021.167227
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发表时间：
2021-09
期刊：
影响因子：
3.1
通讯作者：
Chenglong Xue
中科院分区：
文献类型：
--
作者：
Xiaoyu Shi;Daosheng Wen;Shouren Wang;Gaoqi Wang;Mingyuan Zhang;Jinkun Li;Chenglong Xue
Wear is the leading cause of brake disc failure. However, laser cladding technology provides a fast and environmentally friendly method to repair brake disc damage caused by wear. In this paper, Ni-based alloy powder was used to prepare the coating on the surface of the brake disc to improve its wear resistance, and the coating prepared by laser cladding was systematically studied. The main phases of the coating were γ-Ni and Ni3C, which were the main reasons for increasing the hardness and elastic modulus. The microstructure of the coating is compact. With the change of the solidification rate and temperature gradient, the microstructure changed from columnar to cellular, dendritic and equiaxed. By comparing the wear volume of the coating and substrate before and after wear, it was found that the coating has better wear resistance (about 1.5 times that of the substrate). Besides, the coating also has good oxidation resistance. The oxidation film formed during the wear process of the coating is beneficial to inhibit the regeneration of oxide. Therefore, according to the test results the laser cladding Ni-based coating is an effective means to improve the tribological properties of the brake disc.
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影响因子：
5.7
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影响因子：
5
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