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以碳纤维和铁粉为原材料,采用粉末冶金方法分别制备碳纤维质量分数为0%、0.5%和1%的碳纤维增强铁基复合材料。用MM-200试验机测试该复合材料的磨损性能。用光学显微镜和扫描电镜来表征复合材料的显微结构以及磨损表面。结果表明:碳纤维在铁基复合材料中分布均匀。在碳纤维含量为0.5%的铁基复合材料中,碳纤维呈点状分布,周围有许多小孔,表面疏松;在碳纤维含量为1%的复合材料中,碳纤维与铁基结合成片状向外延伸,周围小孔较少,表面致密。随碳纤维含量的增加,该复合材料的磨损率降低,硬度增加。
Using carbon fiber and iron powder as raw materials, carbon fiber reinforced iron matrix composites with carbon fiber mass fraction of 0%, 0.5% and 1% were respectively prepared by powder metallurgy method. The MM-200 tester was used to test the wear properties of the composites. Optical microscopy and scanning electron microscopy were used to characterize the microstructure of the composites and to wear the surface. The results show that carbon fiber is evenly distributed in iron-based composites. In the iron-based composites with carbon fiber content of 0.5%, the carbon fibers are distributed in a dotted pattern with many small holes around them, and the surface is loose. In the composite material with a carbon fiber content of 1%, the carbon fibers and the iron- , Less holes around, the surface is dense. With the increase of carbon fiber content, the wear rate of the composites decreases and the hardness increases.