Liquid Phase Compacting of Fe-Sn-Cu Powder Alloy

The studies of the regularity of liquid phase compacting and densification have been carried out. The regression analysis on testing data indicates that among density increment in liquid compacting AD(=Y),and specific surface of powderS, liquid content G (G/S=X), there is a relation of exponential function:Y=ae^h/x.
The mechanism of densification is diffusional creep, and liquid phase activation of surface of solid particles, that can be borne out by the comparison of copper-plated iron powder's liquid compacting with iron powder's liquid compacting, besides ubrication of liquid phase, dissolution and reprecipitation of solid phase in liquid phase.