.alpha.-Al.sub.2 O.sub.3 abrasive material and method of prepari

Details .alpha.-Al.sub.2 O.sub.3 abrasive material and method of prepari .alpha.-Al.sub.2 O.sub.3 abrasive material and method of prepari

1987-09-22

1989-01-24

Lieberman, Paul

Abrasive tool making process, material, or composition

Miscellaneous

51307, 51309, B24D 1300

Patent

active

047999381

ABSTRACT:
A sintered, microcrystalline abrasive material consists of at least 99.5%, by weight, of .alpha.-Al.sub.2 O.sub.3 crystallites having a size of less than 2 .mu. and the material having a density of at least 97% of the theoretical density. This abrasive material has a very high abrasive property and can be used in grinding bands or discs.

REFERENCES:
patent: 3615306 (1971-10-01), Jones, II et al.
patent: 3615307 (1971-10-01), Jones, II
patent: 3637360 (1972-01-01), Ueltz et al.
patent: 3802893 (1974-04-01), Kiger et al.
patent: 4314827 (1982-02-01), Leitheiser et al.
patent: 4331627 (1982-05-01), Yamamoto et al.
patent: 4518397 (1985-05-01), Leitheiser et al.
patent: 4568363 (1986-02-01), Meloon

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