Abstract
The process of rapid rate sintering of dispersed powders is studied. It is shown that rapid rate sintering results in high density and uniform fine-grained microstructure of the sintered materials. Structure evolution of porous powder packing is analyzed from the viewpoint of the statistics of randomly packed particles with varying average relative density. A new mechanism of rotational rearrangement controlled through grain boundary diffusion and providing uniform densification along with reduction in inter-particle distance is proposed. The advanctages of non-isothermal and rapid heating sintering are discussed.
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