B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 1/00 (2006.01) C22C 1/04 (2006.01) C22C 32/00 (2006.01) C22C 33/02 (2006.01) C23C 4/08 (2006.01)
Patent
CA 2401970
A high velocity oxygen fuel thermal spray powder comprising a superalloy having the formula MCrAlY-X, wherein M is at least one metal taken from the group consisting of nickel, cobalt, and iron; X is at least one reactive element taken from the group consisting of hafnium, rhenium, lanthanum, and tantalum; and yttrium is present in levels greater than 1 % by weight of the total composition and up to about 6 % by weight of the total composition. In addition, the powder may be blended with an agglomeration of M'CrAlY and a ceramic, wherein M' is at least one metal taken from the group consisting of nickel, cobalt, and iron. The invention offers improved high temperature oxidation, corrosion and creep resistance.
L'invention porte sur une poudre thermique pulvérisable du type HVOF (High Velocity Oxygen Fuel) consistant en un superalliage de formule MCrAlY-X, dans laquelle: M est au moins un métal choisi parmi Ni, Co et Fe; X est au moins un élément réactif choisi parmi Hf, Re, La et Ta, et Y est de 1 6 % en poids de la composition totale, d'yttrium. Ladite poudre peut de plus être mélangée à un aggloméré de céramique et de M'CrAlY, formule dans laquelle M' est au moins un métal choisi parmi Ni, Co et Fe. Ladite poudre présente une meilleure résistance à l'oxydation, à la corrosion et au fluage à haute température.
Dorfman Mitchell R.
Lapierre Kerry
Russo Lysa
Kirby Eades Gale Baker
Sulzer Metco (us) Inc.
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