Sprayable composition

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 4/10 (2006.01) B05D 1/06 (2006.01) B05D 7/14 (2006.01) C23C 4/06 (2006.01)

Patent

CA 2358624

The present invention provides a sprayable composition comprising a ceramic particulate including albite, illite, and quart, and a metallic composition, including nickel, chromium, iron, and silicon. The sprayable composition may be a composite particle, a blend, or a cored wire. The present invention further provides an abradable coating formed on a metal substrate according to a method comprising the step of depositing the abradable coating on the metal substrate by thermal spraying of a sprayable composition comprising a ceramic particulate including albite, illite, and quartz, and a metallic composition, including nickel, chromium, iron and silicon. The sprayable composition may be a composite particle, a blend, or a cored wire. The abradable coating may be applied to a metal substrate such as steel, nickel-based alloys, and titanium.

La présente invention porte sur une composition atomisable comprenant une particule de céramique notamment de l'albite, de l'illite et du quartz, et une composition métallique, dont du nickel, du chrome, du fer et du silicium. La composition atomisable peut être une particule de composite, un mélange, ou un fil fourré. La présente invention fournit en outre une couche abradable formée d'un substrat métallique d'après un procédé comportant l'étape du dépôt de la couche abradable sur le substrat métallique par projection thermique d'une composition atomisable qui comprend une particule de céramique dont de l'albite, de l'illite et du quartz, et une composition métallique, dont du nickel, du chrome, du fer et du silicium. La composition atomisable peut être une particule de composite, un mélange ou un fil fourré. La couche abradable peut être appliquée sur un substrat en métal comme de l'acier, des alliages à base de nickel, et du titane.

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