Abstract
Observation of microstructure changes and the rate of densification during sintering of Cu-Pb, Cu-Bi, Fe-Cu, Fe-Ag, Co-Cu and Co-Ag in the presence of a liquid phase indicated that the rate of densification was closely related to its microstructure, and the full densification was obtained in the structure with continuous liquid phase surrounding solid particles.
From the contact angle measurements by the sessile-drop method, the complete densification was obtained in the systems with complete wettability and an appreciable solubility of the solid in the liquid.
The rate of particle growth was rapid in a large solubility of the solid in the liquid.
