载荷对镍钴合金镀层耐磨性的影响  

Effect of Load on Wear Resistance of Ni-Co Alloy Coating

作　　者：刘霁云 赵阳[1] 董世运[1] 徐滨士[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《装甲兵工程学院学报》2017年第4期106-110,共5页Journal of Academy of Armored Force Engineering

基　　金：国家重点研发计划基金资助项目(2016YFB1100205)

摘　　要：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 coating under different conditions, the Ni-Co alloy coating is prepared by electrodeposition. Its microhardness and phase structure are characterized by X-Ray Diffractometer（XRD） and microhardness tester. The tribological properties of coating are investigated by the CETR-UMT-3 tribometer, Scanning Electron Microscope （SEM）, Energy Dispersive Spectrometer （EDS） and three-dimension profilometer under different loads, frequencies and friction pairs. The results show that the microhardness is 428 HV and the coating has face-centered cubic structure; The wear volumes increase with the increase of loads and frequencies; after sliding against the GCr15 ball, the adhesive wear is dominated; after sliding against the Si3N4 ceramic bail, the abrasive is dominated and the wear volume and the Coeffcient Of Friction（COF） of Ni-Co electrodeposited coating is less than that against the GCr15 ball.

关 键 词：镍钴合金镀层 耐磨性 电沉积 载荷 

分 类 号：TQ153.2[化学工程—电化学工业]