Abstract: 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.