Nano-sized alpha alumina particles having a silica coating there

Details Nano-sized alpha alumina particles having a silica coating there Nano-sized alpha alumina particles having a silica coating there

1994-02-04

2000-04-11

Bos, Steven

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

428404, 106 3, B05D 700, B32B 900, C09G 100

Patent

active

060485779

ABSTRACT:
Nano-sized powders of alpha alumina can be obtained from a boehmite gel doped with a barrier-forming material such as silica that is then dried, fired and comminuted to powder form.

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patent: 4657754 (1987-04-01), Bauer et al.
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patent: 4786555 (1988-11-01), Howard, Jr.
patent: 4818515 (1989-04-01), Ceresa et al.
patent: 4956015 (1990-09-01), Okajima et al.
patent: 4997461 (1991-03-01), Markhoff-Matheney et al.

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