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为了探究镍钴(Ni-Co)合金镀层在不同工况条件下的摩擦磨损情况,采用电沉积技术制备了Ni-Co合金镀层,分别利用显微硬度计和X射线衍射仪(X-Ray Diffractometer,XRD)表征了Ni-Co合金镀层的显微硬度和相结构,利用摩擦磨损试验机、扫描电子显微镜(Scanning Electron Microscope,SEM)、能谱仪(Energy Dispersive Spectrometer,EDS)和三维形貌仪研究了镀层在不同载荷、频率与摩擦副下的摩擦学性能。结果表明:镀层的显微硬度为428 HV;镀层为面心立方结构;镀层的磨损体积随载荷和频率的增大而增大;摩擦副为GCr15钢球时,主要为粘着磨损;摩擦副为Si3N4陶瓷球时,主要为磨粒磨损,且与摩擦副为GCr15钢球时相比,镀层磨损体积较小,摩擦因数(Coefficient Of Friction,COF)较低。
In order to investigate the friction and wear of Ni-Co alloy coatings under different operating conditions, Ni-Co alloy coatings were prepared by electrodeposition technique. The coatings were characterized by microhardness tester and X-ray diffractometer , XRD) were used to characterize the microhardness and phase structure of the Ni-Co alloy coating. The tribological properties of the Ni-Co alloy coating were characterized by using a tribometer, a Scanning Electron Microscope (SEM), an Energy Dispersive Spectrometer (EDS) The tribological properties of the coating under different loads, frequencies and friction pairs were studied. The results show that the microhardness of the coating is 428 HV; the coating is face-centered cubic structure; the wear volume of the coating increases with the increase of the load and the frequency; the friction pair is GCr15 steel ball, Si3N4 ceramic ball, the main abrasive wear, and compared with the friction pair GCr15 steel ball, the coating wear volume smaller friction coefficient (Coefficient Of Friction, COF) lower.