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用脉冲电沉积方法制备了纳米晶N i-Co-Fe-P合金镀层.采用X射线衍射(XRD),透射电镜(TEM),扫描电镜(SEM),能谱分析(EDS)等方法研究了合金镀层的微观组织结构和成份.采用显微硬度计和摩擦磨损试验机测试合金镀层的显微硬度和摩擦磨损性能.结果表明:纳米晶N i-40.41%Co-6.16%Fe-1.63%P合金镀层的晶粒尺寸为8.3 nm,显微硬度和耐磨性明显高于不含P的N i-Co-Fe镀层;适当温度退火可以提高镀层的硬度及耐磨性;镀层的耐磨性与其硬度成正相关,且随着硬度的提高,镀层的磨损机理由磨粒磨损和黏着磨损共同作用转变为磨粒磨损主导.
Nanocrystalline Ni-Co-Fe-P alloy coatings were prepared by pulsed electrodeposition method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) The microstructure and composition of the alloy coating were investigated by means of microhardness tester and friction and wear tester.The results show that the nanocrystalline Ni-40.41% Co-6.16% Fe-1.63% P The grain size of the alloy coating is 8.3 nm, the microhardness and wear resistance are obviously higher than that of the N i-Co-Fe coating without P; proper temperature annealing can improve the hardness and wear resistance of the coating; wear resistance of the coating And its hardness has a positive correlation, and with the increase of hardness, the wear mechanism of the coating changes from abrasive wear and adhesive wear to abrasive wear.