关键词: 微波固化, 热固化, 润滑涂层, 摩擦系数, 减摩抗磨

Abstract: The research aims to investigate the tribological properties of composite bonded solid lubricating coatings under different curing methods. Composite epoxy solid lubricant coating is prepared by using epoxy resin as binder, molybdenum disulfide, graphite, alumina, and cerium fluoride as solid fillers. The curing tests of the composite bonded solid lubricating coating are conducted under microwave curing and thermal curing, by using white light interferometer to analyze the surface wear scar after the coating surface is worn. Scanning electron microscope (SEM) is used to analyze the worn scar and the unworn area. Energy dispersive Xray spectrometer (EDS) is used to analyze the surface of worn scar. The coefficient of friction (COF) of microwave curing in 10 minutes is 0.17, which is lower than 0.24 of thermal curing in 10 minutes. When the heat curing time increases to 30 minutes, the COF is close to that of microwave curing for 10 minutes. The fillers on the surface of heatcured coating agglomerate and the surface are rough and flake off after grinding. The surface of microwavecured coating is flake distribution and the surface are smooth after wear. SEM analysis shows that the wear pattern of heat cured coating is mainly abrasive wear, while the wear of microwave cured coating is slight, and the transfer film forms during the process of wear. EDS element analysis shows that the curing method had no effect on the dispersion of the coating.