Ceramic products and process for producing the same

Details Ceramic products and process for producing the same Ceramic products and process for producing the same

1988-03-25

1990-08-28

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501153, 264 66, C04B 3510

Patent

active

049525379

ABSTRACT:
A process for producing a ceramic product comprises the steps of adding, as desired, chromium salt and magnesium salt to aluminum salt as starting materials, calcining the salts to obtain fine powder mixture of metal oxides which comprises alumina as a main component, forming the powder mixture into a desired shape of body, and sintering and hot isostatically pressing the formed body.

REFERENCES:
patent: 3377178 (1968-04-01), Miller et al.
patent: 3725094 (1973-04-01), Levy, Jr. et al.
patent: 3862845 (1975-01-01), Manigault
patent: 3871891 (1975-03-01), Schuller et al.
patent: 4019914 (1977-04-01), Esper et al.
patent: 4126654 (1978-11-01), Montgomery et al.
patent: 4418024 (1983-11-01), Prochazka et al.
patent: 4427785 (1984-01-01), Prochazka et al.
patent: 4595665 (1986-06-01), Takayama et al.
patent: 4762655 (1988-08-01), Rhodes et al.
Bradt, "Cr.sub.2 O.sub.3 Solid Solution Hardening of Al.sub.2 O.sub.3 ", Journal of American Ceramic Society, vol. 50, No. 1, pp. 54-55, 1967.
Chemical Abstract, vol. 101, No. 18, 29 Oct. 1984, p. 128, Abs. 154244y-A process for producing polycrystalline synthetic ruby.
Transactions and Journal of the British Ceramic Society, vol. 81, No. 5, Sep./Oct. 1982, pp. 148-151, by Sclosa et al., "Fracture Toughness of Hot Isostatically Pressed Alumina."

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