Abrasive grits formed of ceramic containing oxides of...

Details Abrasive grits formed of ceramic containing oxides of... Abrasive grits formed of ceramic containing oxides of...

C - Chemistry, Metallurgy

09

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C09K 3/14 (2006.01) B24D 3/34 (2006.01) B24D 11/00 (2006.01) C01F 7/02 (2006.01) C04B 35/111 (2006.01)

Patent

CA 1254392

Abrasive Grits Formed of Ceramic Containing Oxides of Aluminum and Yttrium, Method of Making and using the Same and Products Made Therewith Abstract Ceramic abrasive grits comprising alpha alumina and at least about 0.5 percent by weight yttria are prepared by mixing an aqueous dispersion of alpha alumina monohydrate and yttrium compound, gelling the resultant mixture, drying the gel to produce a dried solid, crushing the dried material to produce grits, calcining the dried grits to substantially remove bound volatile materials, and firing the grits to produce a ceramic material. The yttrium for the most part is in the form of a yttrium aluminum garnet. Abrasive products comprising the abrasive grits are also claimed as is a method of grinding a workpiece with such abrasive products.

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