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采用冷压烧结和热挤压方法制备出1.5~5 vol%SiCP(130 nm)/Al(149~75μm)复合材料,并对其抗压、硬度和滑动磨擦特性进行了研究,旨在研究引入弥散的亚微米级SiCP对SiCP/Al复合材料磨擦性能的影响。结果表明:随着SiCP(130 nm)含量的增加,其显微硬度值也增加,在SiCP(130 nm)含量为1.5 vol%和5 vol%时,SiCP(130 nm)Al复合材料显微硬度分别为28.4和33.3;复合材料的抗压强度分别是170 MPa和186 MPa;在较高载荷下,随SiCP含量增加,复合材料的耐磨性能提高,1.5 vol%和5 vol%SiCP/Al基复合材料具有优异的滑动磨损抗力,SiCP/Al基复合材料耐磨性优于挤压态QSn6.5-0.4和纯Al;磨损表面形成Al基体弥散分布着SiCP和孔隙的理想耐磨组织。
The composite materials with 1.5 ~ 5 vol% SiCP (130 nm) / Al (149 ~ 75μm) were prepared by cold-press sintering and hot extrusion. Their compressive, hardness and sliding friction properties were studied. Effect of Dispersed Submicron SiCP on Tribological Properties of SiCP / Al Composites. The results show that the microhardness of SiCP (130 nm) Al composites increases with the increase of SiCP (130 nm) content. The microhardness of SiCP (130 nm) Al composites at SiCP (130 nm) Respectively, of 28.4 and 33.3, respectively. The compressive strength of composites were 170 MPa and 186 MPa, respectively. Under high loading, the wear resistance of composites increased with increasing SiCP content. The composite has excellent sliding wear resistance. The wear resistance of SiCP / Al matrix composites is better than that of extruded QSn6.5-0.4 and pure Al. The wear resistant Al matrix is the ideal wear resistant microstructure with SiCP and pores dispersed.