固化方式对粘结固体润滑涂层摩擦学性能的影响

为了探究不同固化方式下复合粘结固体润滑涂层的摩擦学特性.以环氧树脂为粘结剂，二硫化钼、石墨、氧化铝、氟化铈为固体填料，制备复合粘结固体润滑涂层.分别对复合粘结固体润滑涂层在微波固化和热固化下进行固化，使用白光干涉仪分析涂层表面磨损后的表面磨痕.使用扫描电子显微镜(SEM)对涂层磨损与未磨损区域表面进行观察，使用能量色散X射线光谱仪(EDS)对磨痕区域的元素进行分析.当微波固化与热固化时间均为10分钟时，微波固化的摩擦系数为0.17，低于热固化的0.24；当热固化时间提升到30分钟时，与微波固化10分钟的摩擦系数基本接近.观察热固化涂层表面，发现填料团聚，对磨后表面比较粗糙且呈片状剥落；微波固化涂层表面呈片状分布，磨损后表面比较光滑.SEM形貌分析表明热固化涂层磨损形式主要为磨粒磨损；微波固化涂层磨粒磨损较轻微，在对磨过程中能形成转移膜.EDS元素分析表明固化方式对涂层的分散性没有影响.

The Influence of Curing Methods on Tribological Properties of#br# Bonded Solid Lubricant Coatings#br#

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.