Abstract
The mechanical response of powders in the initial rearrangement stage of liquid-phase sintering (LPS), where capillary force is the driving force for densification, is discussed in this paper. The model which is described in detail elsewhere [Xu, K., Mehrabadi, M.M., 1997, A micromechanical model for the initial rearrangement stage of liquid-phase sintering, Mech. Mater. 25, 137–157.] can be used to determine the dependence of the overall volume change on such factors as local liquid volume, uniformity of liquid distribution, contact angle, initial particle distance, initial confining pressure, particle size and viscosity. Here, the discussion is limited to the influence of macroscopic liquid volume ratio on the volume change behavior of the powder system. The results obtained are in qualitative agreement with the observation.
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