钨含量对Ni-W合金镀层摩擦学性能的影响  

Influence of Tungsten Content on the Tribological Performance of Ni-W Alloy Coatings

作　　者：高强 白霄 牟毅 张德建 万勇 GAO Qiang;BAI Xiao;MOU Yi;ZHANG Dejian;WAN Yong(School of Mechanical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan Shandong 250353,China)

机构地区：[1]齐鲁工业大学(山东省科学院)机械工程学院,山东济南250353

出　　处：《润滑与密封》2024年第9期135-141,190,共8页Lubrication Engineering

摘　　要：为探究W含量对Ni-W合金镀层摩擦学性能的影响,采用脉冲电沉积技术在45钢基体表面制备Ni-W合金镀层,探究钨含量对Ni-W合金镀层微观结构、力学及摩擦学性能的影响。研究结果显示:制备的Ni-W合金镀层晶粒尺寸均匀致密,镀层与基体之间结合紧密;与基体材料相比,Ni-W合金镀层具有更高的硬度,且硬度随着钨含量增加而增加;45钢基体磨损行为主要表现为磨粒磨损,Ni-W镀层主要表现为黏着磨损和磨粒磨损,且随着W含量的增加,镀层的耐磨性能逐渐提高;在干摩擦和PAO6油润滑条件下,Ni-W合金镀层能够显著降低基体的磨损,尤其在油润滑条件下,镀层表面几乎没有出现磨损。因此,脉冲电沉积Ni-W合金镀层具备优异的摩擦学性能,通过调节镀层中的钨含量可有效改善其力学性能和摩擦学性能。To investigate the effect of W content on the tribological properties of Ni-W alloy coatings,Ni-W alloy coatings were prepared on the surface of 45 steel substrate using pulse electro-deposition technique.The influence of tungsten content on the microstructure,mechanical,and tribological properties of the Ni-W alloy coatings was investigated.The results show that the grain size of the Ni-W alloy coatings is uniform and dense,and the bond between the coating and the substrate is tight.Compared with the 45 steel substrate,the Ni-W alloy coatings have higher hardness,and the hardness increases with the increase of tungsten content.The wear behavior of the 45 steel substrate is mainly abrasive wear,while the Ni-W coating is mainly adhesive wear and abrasive wear,and with the increase of W content,the wear resistance of the coatings gradually improves.Under dry friction and PAO6 oil lubrication conditions,Ni-W alloy coating can significantly reduce the wear of the material,especially under oil lubrication conditions,there is almost no wear on the coating surface.Therefore,the pulse electro-deposited Ni-W alloy coatings demonstrate excellent tribological performance,and the mechanical and tribological properties can be effectively improved by adjusting the tungsten content in the coatings.

关 键 词：脉冲电沉积 Ni-W合金镀层 力学性能 摩擦学性能 

分 类 号：TH117.1[机械工程—机械设计及理论] TG174.441[金属学及工艺—金属表面处理]