In-situ surface nitridation of zirconia ceramics

Details In-situ surface nitridation of zirconia ceramics In-situ surface nitridation of zirconia ceramics

C - Chemistry, Metallurgy

04

B

C04B 35/64 (2006.01) C04B 35/486 (2006.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01)

Patent

CA 2214368

A method for preparing a ceramic article, the method comprising the steps of: 1) compacting a mixture of particulate zirconium diboride and a zirconium oxide or zirconium oxide alloy or composite thereof which results in the formation of a block and 2) sintering the block in a mixture of nitrogen and hydrogen to form a ceramic with a core comprising zirconia and a shell comprising zirconium nitride.

Méthode pour préparer un article en céramique, comprenant les étapes suivantes : 1) compactage d'un mélange de particules de diborure de zirconium et d'oxyde de zirconium ou d'alliage d'oxyde de zirconium, aboutissant à la formation d'un bloc; 2) frittage du bloc dans un mélange d'azote et d'hydrogène pour former un produit céramique avec un noyau contenant la zircone et une enveloppe à base de nitrure de zirconium.

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