Reaction injection molding of ceramics using a ceramic precursor

Details Reaction injection molding of ceramics using a ceramic precursor Reaction injection molding of ceramics using a ceramic precursor

1992-06-26

1993-03-02

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 65, 2643282, 419 13, 419 14, 419 19, 419 36, 419 39, 419 40, C04B 3564

Patent

active

051907097

ABSTRACT:
A process for reaction injection molding of ceramic articles is disclosed. The process comprises (a) injecting a fluid, non-dilatant mixture comprising a ceramic powder, a metal powder or mixtures thereof, and a curable ceramic precursor that is a liquid below its curing temperature, into a heated mold, (b) curing the ceramic precursor to produce a hardened molded article, (c) heating the hardened molded article under a suitable atmosphere to a temperature sufficient to convert the ceramic precursor to a ceramic, and (d) sintering the ceramic to the desired density.

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