Ceramic abrasive grains, method of producing the same and abrasi

Details Ceramic abrasive grains, method of producing the same and abrasi Ceramic abrasive grains, method of producing the same and abrasi

1993-10-25

1995-07-11

Jones, Deborah

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

501 12, 501127, 501152, 501153, 428404, C09C 168

Patent

active

054317045

ABSTRACT:
Al.sub.2 O.sub.3 -Er.sub.2 O.sub.3 ceramic abrasive grains comprising a second phase consisting of aluminum oxides and erbium oxides in the form of reaction products surrounding a first phase and the first phase exclusive of the second phase and substantially consisting of alpha alumina only, the size of the crystal grain consisting of two phases being below 1 micron, which are obtained by a sol-gel process wherein erbium precursor is incorporated before sintering in an amount of 0.05-0.4 wt % in a form of Er.sub.2 O.sub.3, which is suitable for lapping composition, grinding wheel, grinding disc and coated abrasive articles.

REFERENCES:
patent: 3802893 (1974-04-01), Kiger et al.
patent: 4623364 (1986-11-01), Cottringer et al.
patent: 4881951 (1989-11-01), Wood et al.
patent: 5007943 (1991-04-01), Kelly et al.
patent: 5164348 (1992-11-01), Wood
patent: 5190567 (1993-03-01), Tamamaki et al.

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