Optimization of an aqueous, commercial silicon nitride slurry for colloidal isopressing (original) (raw)

Journal of the European Ceramic Society, 2002

Abstract

A commercial Si3N4-based aqueous slurry (AS800) was processed to enable the forming of shapes via a new method called colloidal isopressing. The as-received slurry was reformulated at pH 9–10 to contain 2 wt.% PEG-silane (N-[(triethoxysilyl)propyl]-O-polyethylene oxide urethane) and 0.5 M of either tetramethylammonium chloride or tetramethylammonium nitrate. The addition of the salt to an AS800 slurry formulated in the dispersed

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