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SiC/Fe composites show superior properties such as high wear resistance, high inflexibility, high strength, etc. They can be widely used in many industrial fields as high temperature, high speed devices, e.g.In this study, SiCp reinforced Fe matrix composites were investigated with a coating method and both conventional sintering and current-vacuum hot-pressing. Cu coated SiCp composite powders were prepared by a heterogeneous deposition method, and the coating layer of Cu improved the wetting ability, physic consistent and chemical consistent. The combined DTA-TG technique was used to detect the thermo-dynamic behavior of the composites during the sintering processing. XRD, SEM and EDS techniques were used to characterize the samples. The relative density, microhardness and strength properties of composites were analyzed. The tribological properties were measured, too.It is found that when the temperature of conventional sintering was no more than 1200℃, the content of Cu was below 8.3wt%, there was no interfacial reaction. The content of Cu was 8.3wt%, there was faintness reaction. And the content of Cu was above, there was seriously interfacial reaction. When the temperature of conventional sintering was more than 1200℃, the no Cu and the content of Cu was no less than 8.3wt%, there was seriously interfacial reaction. While there was no interfacial reaction, the content of Cu was below 8.3wt%. It is indicated that proper content of Cu could improve the stability of Fe and SiC. Current-vacuum hot-pressing was one of the most effective methods for preparing SiCp reinforced Fe matrix composites. The relative density, microhardness and strength of composites were increased with the temperature increased, when the content of Cu was 0wt% and 1wt%. While it was increased firstly and then declined with the temperature increased, when the content of Cu was 3wt% and 5wt%, and the maximum appeared at about 950℃. The relative density, microhardness and strength of composites were increased firstly and then declined, with the content of SiCp changing, when the content of SiCp was about 5wt%, the maximum appeared. The perfect processing of current-vacuum hot-processing was 950℃, 30MPa, 5wt%SiCp, and the relative density, microhardness and strength were 96%、420.5Hv和646MPa separately. The wear behaving of composite was mainly grinding abrasion, and the abrasion mechanism was micro-furrow and micro-cutting. The mass loss of composites was increased with the increasing of load. The reinforcing effect of high content of SiCp was excellent during the heavy load condition.
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