COMPOSITE METAL POWDER, ITS PRODUCTION AND WEAR-RESISTANT PARTS

摘要

PURPOSE:To produce a composite metal powder in which fine ceramic particles are uniformly dispersed in metal particles and the joining strength between both particles is enhanced and to provide wear-resistant parts excellent in structural strength and sliding characteristic from the composite metal powder. CONSTITUTION:This composite metal powder 10 is obtained by dispersing ceramic particles 4 having <=30mum diameter in a metal particle matrix 2a. The ceramics to be dispersed consists of at least one kind selected from Si3N4, AlN, Al2O3, ZrO2, SiC and SiO2. The powder 10 is produced by atomizing the molten metal in which the ceramic particles 4 are dispersed and solidifying the molten metal. The composite metal powder 10 is compacted and sintered to produce wear-resistant parts.