Ceramic composition for coating surgical and dental instruments

Details Ceramic composition for coating surgical and dental instruments Ceramic composition for coating surgical and dental instruments

C - Chemistry, Metallurgy

22

C

C22C 29/08 (2006.01) A61L 31/00 (2006.01) C23C 4/06 (2006.01) C23C 4/10 (2006.01)

Patent

CA 2286023

The working surfaces (3) of dental and surgical instruments (1) are coated with a ceramic material formed by plasma spraying of a composition including a cemented carbide matrix and a ceramic dispersion to form a hardened surface with improved gripping ability. The cemented carbide matrix preferably contains tungsten and/or chromium carbide and/or cobalt. The ceramic dispersion preferably consists of alumina or other oxides.

Selon cette invention, on dépose sur les surfaces de travail (3) d'instruments chirurgicaux et dentaires (1) du matériau céramique, formé au moyen de la projection par plasma d'une composition comprenant une matrice de carbure métallique fritté et une dispersion céramique pour créer une surface durcie possédant de meilleures qualités de préhension. La matrice de carbure métallique fritté comprend, de préférence du tungstène et/ou du carbure de chrome et/ou du coblat. De préférence, la dispersion céramique est composée d'alumine ou d'autres oxydes.

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