Process for the preparation of SiC whisker-reinforced ceramic co

Details Process for the preparation of SiC whisker-reinforced ceramic co Process for the preparation of SiC whisker-reinforced ceramic co

1995-06-28

1997-08-12

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264640, 264667, B05B 300, B29C 5900

Patent

active

056562128

ABSTRACT:
A SiC whisker-reinforced ceramic composite is prepared by adding about 0.4 to 1.0% by weight of a nonionic polymer, polyvinylalcohol (PVA) to a heat-treated SiC whisker to obtain a SiC whisker slurry, mixing the SiC whisker slurry with a matrix slurry formed at about pH 4 followed by freeze-drying the resulting slurry mixture to produce granules having a uniform packing structure and hot pressing the granules.

REFERENCES:
patent: 4839316 (1989-06-01), Tiegs
patent: 5009822 (1991-04-01), Sacks et al.
patent: 5106793 (1992-04-01), Greil et al.
Ceramic Transactions, vol. 1, Part A, pp. 397-409, 1988, C.S. Khadilkar, et al., "Effect Of Poly(Vinyl Alcohol) On The Properties Of Model Silica Suspensions".
Communications of the American Ceramic Society, pp. 267-269, Dec. 1984, Paul F. Becher, et al., "Toughening Behavior In SiC-Whisker-Reinforced Alumina".
J. Am. Ceram. Soc., vol. 71, No. 5, pp. 370-379, 1988, Michael D. Sacks, et al., "Suspension Processing of Al203/SiC Whisker Composites".
Ceramic Bulletin, vol. 66, No. 2, pp. 333-338, 1987, Joseph Homeny, et al., "Processing And Mechanical Properties Of SiC-Whisker-Al203-Matrix Composites".

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