Shelling-resistant abrasive grain, a method of making the same,

Details Shelling-resistant abrasive grain, a method of making the same, Shelling-resistant abrasive grain, a method of making the same,

1988-10-14

1991-04-30

Dixon, Jr., William R.

Abrasive tool making process, material, or composition

Miscellaneous

51307, 51308, 51309, B24D 300

Patent

active

050115081

ABSTRACT:
Sintered ceramic abrasive grains having increased surface area and a method of making the same are provided. The abrasive grains are incorporated into improved "shelling-resistant" abrasive articles such as coated abrasives, grinding wheels and non-woven abrasives. The ceramic abrasive grains are made by providing first particles comprising alpha-alumina precursor, introducing fine particles which can be sintered directly to the surface of the first particles upon sintering of the same, and heating the mixture of particles under sintering conditions to cause autogenous bonding of the fine particles to the surface of each of the first particles.

REFERENCES:
patent: 4252544 (1981-02-01), Takahashi
patent: 4314827 (1982-02-01), Leitheiser et al.
patent: 4518397 (1985-05-01), Leitheiser et al.
patent: 4574003 (1986-03-01), Gerk
patent: 4623364 (1986-11-01), Cottringer et al.
patent: 4744802 (1988-05-01), Schwabel

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