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通过酚醛树脂固化、碳化及原位硅化的技术制备复杂形状SiC陶瓷,并利用金属浇注工艺制备出了以高锰钢、高铬铸铁为基体的2种网络互穿型SiC陶瓷/金属复合材料。借助湿式橡胶轮摩擦磨损试验机和UMT-3多功能摩擦磨损试验机测试该2种复合材料及2种基体的摩擦学性能,并采用扫描电子显微镜分析了复合材料和基体磨损后的表面形貌。结果表明:由于SiC陶瓷体的强度、硬度比金属基体高,导致在磨损过程中2种基体材料的磨损量较大,且在复合材料表面形成微凸起,使得复合材料的耐磨性能明显提高;SiC陶瓷/高铬铸铁复合材料的耐磨性优于SiC陶瓷/高锰钢复合材料,但SiC陶瓷/高锰钢复合材料的界面结合更好。
The complex shape SiC ceramic was prepared by the technique of curing, carbonizing and in situ siliconization of phenolic resin. Two kinds of interpenetrating SiC ceramic / metal composites with high manganese steel and high chromium cast iron as matrix were prepared by metal casting. The tribological properties of the two kinds of composites and two kinds of matrixes were tested by means of a wet rubber wheel friction and wear tester and a UMT-3 multi-purpose friction and wear testing machine. The surface morphology of the composite and the substrate after abrasion was analyzed by using a scanning electron microscope . The results show that due to the strength and hardness of SiC ceramic body is higher than that of metal matrix, the wear amount of the two kinds of matrix materials is larger during the wear process, and micro bumps are formed on the surface of the composite material, so that the wear resistance of the composite material is obviously improved The wear resistance of SiC ceramic / high chromium cast iron composite is better than that of SiC ceramic / high manganese steel composite, but the interfacial bonding of SiC ceramic / high manganese steel composite is better.