Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1992-11-13
1995-08-08
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501127, 2523157, C04B 35624
Patent
active
054398517
ABSTRACT:
The sol-gel process for forming dense alumina based cermics or dense ceramics with alumina as a sintering additive, the process comprising the steps of: preparing polymeric alumina sol by hydrolysis of Al (O--iBu)3 with a strong acid; preparing the ceramic dispersion in the alumina sol; gelling the dispersion; drying the gel dispersion to form a solid; calcining the solid; and sintering the calcined solid.
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Olagnon et al. "The Effect of Slip Casting Parameters on the Sintering and Final Properties of Si.sub.3 N.sub.4 " Br. Ceram. Trans. J. 88 (1989) 75-78 no month.
Kubo et al. "Sintering Behavior of Ultra-Fine Alumina-Coated Silicon Carbide" Horizons of Powder Metallurgy: Proceedings of the 1986 International Powder Metallurgy Conference & Exhibition The Future of Powder Metallurgy P/M pp. 1151-1154, 1986 no month.
Yoldas, "Alumina gels that form porous transparent Al.sub.2 O.sub.3 ", Jour. of Natl. Sci., vol. 10 #11, Nov. 1975.
Bell Mark L.
Bonner C. M.
Korea Institute of Science and Technology
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