Phenomenological Study of Liquid Phase Sintering (3 rd Report)

Abstract

Microstructure changes, particle growth and the rate of densification during sintering of Cu-Ag in the presence of a liquid phase have been observed. Rapid densification occurred in the early stage of sintering, and more rapidly as the amount of liquid phase and temperature increased.Particle growth by the solution-precipitation process was observed in this system. In a large amount of liquid, particles were larger in initial stage and smaller in final stage than in a small amount.Using spherical copper powders, it has been found that the starting particles was disintegrated into smaller particles.