Preparation and Properties of High Chromium Cast Iron Matrix Composites Reinforced by Zirconium Corundum Particles

Abstract

In this paper, the zirconia corundum ceramic particles reinforced high chromium cast iron matrix wear resistant composite material was produced by vacuum infiltration casting. The experimental results show that the nickel plating on the surface of the ceramic was beneficial to the infiltration of the molten metal. The interface of the composite was dense without defects and uniform particle distribution in the composite. Based on the dynamic analysis of the infiltration process, the mechanism of casting infiltration was expounded detailedly. The friction and wear experiments show that the wear resistance of the composites is 1.93 times of high chromium cast iron and the life was greatly improved. The morphology analysis results show that the wear resistance of the composites was low stress abrasive wear, so the wear mechanism was micro cutting of abrasive grains.