Process for the preparation of ceramic flakes, fibers, and grain

Details Process for the preparation of ceramic flakes, fibers, and grain Process for the preparation of ceramic flakes, fibers, and grain

1992-08-21

1994-05-17

Group, Karl

Compositions: ceramic

Ceramic compositions

Aluminum compound containing

34285, 501127, C04B 3510

Patent

active

053127919

ABSTRACT:
A process for producing ceramic flake, fiber and grain materials comprising solidifying a hydrated alumina sol, freeze drying the solidified sol and thereafter sintering the freeze dried material is disclosed. Novel ribbed flake material made by the process of the present invention is also disclosed.

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W. Mahler and U. Chowdhry; Morphological Consequences of Freezing Gels; equal to article published in Ultrastructure Processing of Ceramics, Glasses and Composites; edited by L. L. French & D. R. Ulrich, John Wiley & Sons (1984); pp. 207-217.
Toshio Maki et al.; "Formation of Oxide Fibers by Unidirectional Freezing of Gel"; Bull. Inst. Chem. Res., Kyoto University; vol. 64, No. 4, 1986 pp. 292-305.
Tadashi Kokubo et al., "Preparation of Amorphous ZrO.sub.2 Fibers by Unidirectional Freezing of Gel"; Journal of Non-Crystalline Solids 56 (1983); pp. 411-416.
Sumio Sakka; "Formation of Glass and Amorphous Oxide Fibers From Solution"; Mat. Res. Soc. Syn. Proc. vol. 32 (1984), pp. 91-99.

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