MANUFACTURE OF MULTICOMPONENT METALLIC SINTERED BODY

摘要

PURPOSE:To obtain a high density multicomponent metallic sintered body free from cracks by sintering and shaping a mixture of powder of an alloy having a eutectic structure with powder of other metal. CONSTITUTION:An alloy having a eutectic structure such as an alloy of rare earth elements is cooled at >=0.01 deg.C/sec cooling rate and crushed. The cooling may be carried out by direct contact with a cold medium. The same metal as one of the metals forming the eutectic structure or a metal different from the metals is also crushed. The resulting two kinds of powders are mixed, sintered and shaped to obtain a high density multicomponent metallic sintered body free from cracks and contg. metals capable of forming a eutectic structure.