Abstract
The relevance of powder packing structure and microstructure in alumina ceramics made through the injection molding process was investigated in the present study. The packing structure of oriented powder particles was retained in the present ceramics after sintering. Even after significant growth, the orientation of the grains was similar to that of the particles in the green body. Anisotropic shrinkage during sintering was attributed to the packing structure. A density distribution also was found, but its origin remains to be clarified.
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