Abstract
A statistical two-level, 16-run factorial experiment was conducted to evaluate the influence of various process parameters on the dimensional variation of injection-molded ceramics. The effects of various solid loadings and feedstock formulations, together with different molding variables, on the shrinkage variation and dimensional tolerance of injection-molded zirconia ceramics were examined. Statistically significant parameters, including the effects from multiple interaction of the selected factors, were determined through the analysis of variance and the F-test. The results suggested that the dimensional variations of both green and sintered moldings were reduced as the molding operation applied a higher hold pressure and a low mold temperature. The general implications in respect of dimensional tolerance in powder injection molding were discussed.
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