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Grain‐Oriented Microstructure of Alumina Ceramics Made through the Injection Molding Process
Author(s) -
Uematsu Keizo,
Ohsaka Shigeru,
Shinohara Nobuhiro,
Okumiya Masataro
Publication year - 1997
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1997.tb02985.x
Subject(s) - microstructure , materials science , sintering , shrinkage , green body , ceramic , composite material , molding (decorative) , anisotropy , grain growth , sphere packing , physics , quantum mechanics
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.