Influence of the Granules Packing Structure on the Particles Orientation of Compacts and Sintering Shrinkage

Abstract

Enlarged particles are aligned in the perpendicular direction of pressing. This particles alignment or particles orientation causes the anisotropy in the sintering shrinkage. The aim of this study is to correlate granules packing structure with particles alignment in the pressing and shrinkage anisotropy. In the initial stage of sintering, Notable difference was observed in the sintering shrinkage of samples fabricated by loosely and densely packed granules. Loosely packed granules presented more anisotropic shrinkage than densely one. In the final stage of sintering, both samples showed isotropic shrinkage.