C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 7/02 (2006.01) C09G 1/02 (2006.01) C25F 3/30 (2006.01)
Patent
CA 2519420
The present invention provides nanoporous .alpha.-alumina powders comprising powder comprising interconnected .alpha.-alumina primary particles having an average particle size of less than about 100nm and an interpenetrated array of pores or voids. The invention also provides nanosized .alpha.-alumina powders comprising .alpha.-alumina particles having an average particle size of less than about 100 nm and slurries, particularly aqueous slurries, which comprise nanosized .alpha.-alumina powders of the invention. The invention further provides methods of manufacturing nanoporous .alpha.-alumina powders and nanosized .alpha.-alumina powders of the invention and methods of polishing using slurries of the invention.
La présente invention concerne des poudres nanoporeuses de .alpha.-alumine comprenant des particules primaires de .alpha.-alumine interconnectées ayant une taille moyenne inférieure à environ 100 nm et un réseau imbriqué de pores ou de cavités. L'invention concerne également des poudres de .alpha.-alumine de taille nanométrique contenant des particules de .alpha.-alumine d'une taille moyenne inférieure à environ 100 nm et des boues, notamment des boues aqueuses contenant les poudres de .alpha.-alumina nanométriques de l'invention. L'invention concerne également des procédés de production de poudres de .alpha.-alumine nanométriques et de poudres nanométriques de .alpha.-alumine de l'invention et es procédés de polissage à l'aide de boues selon l'invention.
Gowling Lafleur Henderson Llp
Saint-Gobain Ceramics & Plastics Inc.
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