Ceramic abrasive grits, method of producing the same and...

Details Ceramic abrasive grits, method of producing the same and... Ceramic abrasive grits, method of producing the same and...

C - Chemistry, Metallurgy

09

K

C09K 3/14 (2006.01) C04B 35/10 (2006.01) C04B 35/117 (2006.01) C04B 35/50 (2006.01) C04B 35/624 (2006.01)

Patent

CA 2109020

ABSTRACT Al2O3-Er2O3 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 Er2O3, which is suitable for lapping composition, grinding wheel, grinding disc and coated abrasive articles.

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