Study on Surface Composites of In-situ Synthesis V_8C_7 Particle Reinforced Iron Matrix

摘要

This article uses the cast-penetrated-heat treatment process produce V_8C_7 particle on the surface of iron base composite material, and analyze its organizing appearance using methods such as XRD, SEM, measured its hardness with micro hardness tester of type TUKON2100, operate wear test under different load with wear test machine of ML-100. Results show that the surface of the particle reinforced iron matrix V_8C_7 composite sample maximum microhardness is 2333 HV_(0.05). At room temperature, when the load is 15N, its average abrasive resistance is about 13 times that of it of grey cast iron, which improves the wear resistance of the iron substrate to a great extent.