Method for producing mono-crystalline alumina grains

Details Method for producing mono-crystalline alumina grains Method for producing mono-crystalline alumina grains

1992-04-27

1993-12-28

Kunemund, Robert

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156600, 156624, 156DIG61, 501127, C30B 2920

Patent

active

052736199

ABSTRACT:
Method for producing mono-crystalline alumina grains comprising fusing alna materials in the presence of halide to induce oxyhalide phase at grain boundaries, cooling and solidifying fused materials and separating oxyhalide phase by means of inorganic acid or alkali before or after crushing, and said alumina materials are composed of either aluminum oxides alone or aluminum oxides and at least one of the metallic oxides selected from the group consisting of chromium oxide, titanium oxide and vanadium oxide.

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