【摘要】 以环氧树脂为基材,通过聚合物体系的优化,添加亚微米级氧化铝（平均粒径0.58μm）陶瓷颗粒,制备了耐磨陶瓷/聚合物涂层。研究表明:在冲蚀条件下,添加Al₂O₃所制得复合涂层,其耐磨性较环氧树脂基质涂层有明显提高;当Al₂O₃的（质量分数,下同）为20%时,涂层可在较短的时间内达到稳定的磨损率。通过扫描电镜观察了涂层的表面摩擦形貌,陶瓷/聚合物涂层的磨损率的实现,主要源于在冲蚀过程中涂层内裸露的硬质陶瓷颗粒所产生的"阴影效应",以及与此同时胶粘剂所起到的耗散冲击能量的作用。在冲蚀条件下,涂层主要以显微切削、犁沟和软基体的选择磨损及硬质点被挖出脱落为主。更多还原

【Abstract】 By optimizing the polymers system based on epoxy resin,wear-resistant ceramic/polymer coatings filled with sub-micron particles of Al₂O₃（0.58μm in diameter）were prepared.The result showed that,under the erosion condition,the wear-resistance of composite coatings with Al₂O₃ was better than that of epoxy resin matrix materials.Steady wear rates of the coatings with addition of 20wt% Al₂O₃ were obtained in a shorter period.The worn surfaces of the polymers were observed by SEM.During the process of erosion, the realization of the lower wear rates owed to the"shade effect",which was caused by those naked ceramic particles,as well as the merit of the adhesive which can disperse impact energy.Under this condition,the main wearing patterns were micro-cutting,wear groove, choice wearing on soft matrix and the hard material particles were excavated.更多还原