Coated abrasive materials and method of manufacture

Details Coated abrasive materials and method of manufacture Coated abrasive materials and method of manufacture

C - Chemistry, Metallurgy

09

K

C09K 3/14 (2006.01)

Patent

CA 2564748

A method of coating ultrahard abrasive particles having vitreophilic surfaces, or treated to render their surfaces vitreophilic, are coated with an oxide precursor material, which is then heat treated to dry and purify the coats. The heat treated, coated ultrahard abrasive particles are further treated to convert the coats to an oxide, nitride, carbide, oxynitride, oxycarbide, or carbonitride thereof, or an elemental form thereof, or a glass.

L'invention concerne un procédé de revêtement de particules abrasives ultradures présentant des surfaces vitréophiles ou traitées de manière à présenter des surfaces vitréophiles. Ledit procédé consiste à revêtir lesdites particules avec un matériau précurseur d'oxyde puis à réaliser un traitement thermique afin de sécher et purifier les revêtements. Les particules abrasives ultradures, revêtues, traitées thermiquement, sont ensuite soumises à un traitement ultérieur de manière à convertir les revêtements en oxyde, nitrure, carbure, oxynitrure, oxycarbure, carbonitrure ou une forme élementaire desdits revêtements, ou en verre.

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