激光与光电子学进展, 2018, 55 (2): 021403, 网络出版: 2018-09-10
高速钢材料表面激光熔覆Ni基WC条纹的减摩机理 下载: 840次
Friction Reducing Mechanism of High Speed Steel Surface with Ni-Based WC Stripes by Laser Cladding
摘要
利用激光熔覆技术,在W6Mo5Cr4V2高速钢(HSS)表面制备了Ni基WC条纹,分别对HSS试件和Ni基WC熔覆条纹试件进行了摩擦磨损实验,测试了试件的摩擦因数,研究了Ni基WC条纹HSS试件的减摩机理。结果表明,Ni基WC熔覆条纹试件的摩擦因数小于HSS试件的,并且随着熔覆条纹间距的减小而减小。Ni基WC熔覆条纹试件中析出的石墨和自身含有的Ni金属具有良好的减摩作用;Ni基WC熔覆条纹的减摩机理是软基体与硬相的相互结合。
Abstract
Ni-based WC stripes on the W6Mo5Cr4V2 high speed steel (HSS) specimen surfaces are fabricated by the laser cladding technique. The friction and wear tests of HSS specimens and specimens with Ni-based WC cladding stripes are carried out, respectively. The friction coefficients of specimens are measured and the friction reducing mechanism of HSS specimens with Ni-based WC stripes is investigated. The results show that the friction coefficients of specimens with Ni-based WC cladding stripes are lower than those of HSS specimens, and they decrease with the decrease of cladding stripe space. Graphite precipitation and Ni meltal self-contained within the specimens with Ni-based WC cladding stripes have a better friction reducing effect, and the friction-reducing mechanism of Ni-based WC cladding stripes is the combination of hard phase with soft substrates.
王燕琳, 何源, 洪鑫, 陈斌, 于爱兵. 高速钢材料表面激光熔覆Ni基WC条纹的减摩机理[J]. 激光与光电子学进展, 2018, 55(2): 021403. Yanlin Wang, Yuan He, Xing Hong, Bin Chen, Aibing Yu. Friction Reducing Mechanism of High Speed Steel Surface with Ni-Based WC Stripes by Laser Cladding[J]. Laser & Optoelectronics Progress, 2018, 55(2): 021403.