Fabrication of Fe-Based Self-Lubrication Composite Containing Graphite Particles by Centrifugal Mixed-Powder Method

摘要

As self-lubrication composites, there are metal-based composite containing graphite particles. However, many of the self-lubrication composites have pure Cu or Cu alloy matrix, and investigation of Fe alloy-based self-lubrication composite is few. This is because that Fe alloys can form carbide easily with graphite. In this study, SUS430-based composites containing graphite particles are fabricated by centrifugal mixed-powder method. By using this method, the SUS430-based composites containing graphite particles are successfully obtained. Although very thin carbides are formed at interface between a graphite particle and SUS430 matrix, graphite particles are remained in the SUS430 matrix. Comparing with wear resistance of as-cast SUS430 without graphite particles, the SUS430-based composites have better wear resistance. In addition, frictional coefficient of the SUS430-based composites is much lower than that of the as-cast SUS430. Therefore, the centrifugal mixed-powder method is the effective processing for the fabrication of the SUS430-based composites containing graphite particles.