SiC含量对环氧/SiC复合材料冲蚀磨损性能的影响

摘要

In order to improve the erosion and wear resistance of large flow parts in factories and mines,the epoxy/SiC composite coating was prepared using SiC particle and epoxy resin.The composite coating with excellent erosion and wear resistance can be solidified quickly and coated conveniently.The article studied the effect of SiC particle content on the erosion and wear resistance of epoxy/SiC composite.The erosion and wear test was carried out on a self-made erosion and wear tester.The erosion and wear morphologies of the composite were observed using SEM.The results showed that different SiC particle content in the composite could change the erosion and wear resistance.When the mass fraction of SiC was 66.66％,the interaction of "shadow effect" and "bonding effect"between the SiC particles and resin achieved the best.Meanwhile,the erosion and wear resistance of the composite was the best.When the content of SiC was optimal,the erosion and wear resistance of the composite was better than that of the white cast iron under the same erosion angle.%为了改善工厂、矿山中大型机件的耐冲蚀磨损性,利用SiC颗粒与环氧树脂制备了能够便捷涂覆和快速固化具有优异耐冲蚀磨损性能的环氧/SiC复合材料,着重考察了SiC含量对环氧/SiC复合材料冲蚀磨损性能的影响.用自制的冲蚀磨损试验机对复合材料进行了冲蚀磨损实验,采用SEM等手段对复合材料的冲蚀磨损形貌进行观察分析.结果表明:在复合材料中提高SiC含量可以提高其耐冲蚀磨损性能,当SiC质量分数为复合材料的66.66％时,SiC颗粒与树脂之间“阴影效应”和“粘接效应”相互配合达到最佳,复合材料的冲蚀磨损性能最好；当SiC含量最佳时,复合材料的耐冲蚀磨损性能要好于相同角度下白口铸铁.