Macrocrystalline .alpha.-alumina hexagonal platelets

Details Macrocrystalline .alpha.-alumina hexagonal platelets Macrocrystalline .alpha.-alumina hexagonal platelets

1992-07-27

1994-03-22

Bell, Mark L.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

423628, 423629, 51309, 501153, C30B 2964, C30B 3000

Patent

active

052960854

ABSTRACT:
Macrocrystalline .alpha.-alumina hexagonal platelets, well adapted as reinforcing materials and polishing agents, are prepared by calcining admixture of transition or hydrated alumina and a fluorocompound flux, such fluorocompound flux having a melting point of up to 800.degree. C. and, in the molten state, serving to dissolve the transition/hydrated alumina.

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