Method for molding ceramic powders using a water-based gel casti

Details Method for molding ceramic powders using a water-based gel casti Method for molding ceramic powders using a water-based gel casti

1989-11-13

1991-07-02

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 63, 264109, 2643282, 26432818, 501 1, C04B 3564

Patent

active

050283626

ABSTRACT:
A method for molding ceramic powders comprises forming a slurry mixture including ceramic powder, a dispersant, and a monomer solution. The monomer solution includes at least one monofunctional monomer and at least one difunctional monomer, a free-radical initiator, and a aqueous solvent. The slurry mixture is transferred to a mold, and the mold containing the slurry mixture is heated to polymerize and crosslink the monomer and form a firm polymer-solvent gel matrix. The solid product any be removed from the mold and heated to first remove the solvent and subsequently remove the polymer, whereafter the product may be sintered.

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Cullen, F. M. et al., Forming Precision Shapes From Powdered Materials, IBM Technical Disclosure Bulletin, vol. 14, No. 10, Mar. 1972.

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