Superior high sodium and calcium sol gel abrasive and...

Details Superior high sodium and calcium sol gel abrasive and... Superior high sodium and calcium sol gel abrasive and...

C - Chemistry, Metallurgy

09

K

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C09K 3/14 (2006.01) B24D 3/14 (2006.01) B24D 11/00 (2006.01) C01F 7/02 (2006.01) C01F 7/44 (2006.01) C04B 14/30 (2006.01) C09C 1/40 (2006.01) C09C 1/68 (2006.01)

Patent

CA 1195848

SUPERIOR HIGH SODIUM AND CALCIUM SOL GEL ABRASIVE AND PROCESS FOR ITS PRODUCTION ABSTRACT A process for forming an abrasive grain from a sol gel which contains aluminum oxide monohydrate, a dissolved metal con- taining sintering aid and from above about .05 to about 1.8 weight percent sodium plus calcium, provided that the weight per- cent calcium is from 0 to about 1.8 and the weight percent sodium is from 0 to about .4. The high sodium and calcium is permitted due to rapid heating of the sol gel after drying through a tem- perature range of from below about 800°C to above about 1200°C, prior to sintering the dried gel at a temperature above 1200°C. A grain made by the process and coated, bonded and non-woven abrasive articles comprising the grain.

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