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Gelcasting of Alumina
Author(s) -
Young Albert C.,
Omatete Ogbemi O.,
Janney Mark A.,
Menchhofer Paul A.
Publication year - 1991
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.1151-2916.1991.tb04068.x
Subject(s) - materials science , slurry , ceramic , green body , molding (decorative) , polymer , monomer , composite material , polymerization , viscosity , chemical engineering , engineering
Gelcasting is a novel method for molding ceramic powder based on a synthesis of concepts derived from traditional ceramics and polymer chemistry. Gelcasting of alumina is described in this paper. The process is based on the in situ polymerization of acrylamide monomers as the setting mechanism for forming the green body. It has the following features: slurries with high solids loading and low viscosity (1.8 Pa·s at 62 vol% solids), dried bodies containing less than 4 wt% binder, and the ability to fabricate complex‐shaped bodies.