Ceramic abradable material with alumina dopant

Details Ceramic abradable material with alumina dopant Ceramic abradable material with alumina dopant

C - Chemistry, Metallurgy

04

B

C04B 35/505 (2006.01) C04B 35/49 (2006.01) C04B 35/626 (2006.01)

Patent

CA 2549600

The invention provides an abradable ceramic seal material comprising yttria (Y2G3) stabilized zirconia (Zr Q2) doped with alumina (Al2O3). Furthermore, the invention provides a gas turbine system, comprising at feast one turbine blade; an abrasive tip affixed on a top surface of the at least one turbine blade; a shroud housing the at least one turbine blade; and an abradable seal deposited between the at least one turbine blade and the shroud, wherein the abradable seal includes yttria stabilized zirconia that is doped with 0.5 to 1 wt. % of alumina. In addition, the invention provides a method of forming a powder for abradable coatings.

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