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采用环氧树脂为粘接剂制备了SiC/环氧树脂复合材料,在自制的射流式冲蚀磨损试验机上研究了SiC/环氧树脂的冲蚀磨损性能.结果表明:大尺寸SiC颗粒制备的复合材料较小尺寸SiC颗粒制备的复合材料具有更好的冲蚀磨损性能,且大尺寸SiC颗粒复合材料的冲蚀磨损性能优于Q235钢,而小尺寸SiC颗粒复合材料则低于Q235钢.随着冲蚀角度的变化,其平行材料表面的切削分量和垂直材料表面的冲击分量将会发生变化,低角度冲蚀磨损机理以显微切削和碾压造成环氧树脂及SiC颗粒的层片状脱落为主转变为高角度冲蚀磨损以SiC颗粒碎裂造成环氧树脂疲劳脱落为主.
The epoxy / epoxy resin composites were prepared by using epoxy resin as binder, and the erosive wear properties of SiC / epoxy resin were investigated in a self-made jet erosion tester. The results show that the preparation of large size SiC particles The composites prepared from SiC particles with smaller size have better erosion and wear properties, and the wear resistance of large size SiC particles is better than that of Q235 steel, while the size of SiC particles is smaller than that of Q235 steel. As the erosion angle changes, the cutting component on the parallel material surface and the impact component on the vertical material surface will change. The mechanism of low-angle erosion erosion is micro-cutting and rolling to cause the layering of epoxy resin and SiC particles Exfoliation-based into high-angle erosion wear SiC particles fragmentation caused by the main epoxy fatigue.