Thermal barrier coating system for titanium aluminides

Details Thermal barrier coating system for titanium aluminides Thermal barrier coating system for titanium aluminides

1993-02-25

1995-05-09

Nelson, Peter A.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428564, 419 19, 501132, 501152, B22F 700

Patent

active

054138710

ABSTRACT:
An article of manufacture has as its basic structure a piece of a titanium aluminide, such as gamma (TiAl) or alpha-2 (Ti3Al), desirably in the shape of an aircraft gas turbine component. A thermal barrier coating system overlies at least a portion of the surface of the piece of titanium aluminide. The thermal barrier coating system includes a metallic bond coat layer, preferably in the form of a layer of a nickel-based alloy no more than about 0.005 inches thick, that contacts the piece of titanium aluminide, and a ceramic thermal barrier coating layer, preferably a stabilized zirconia such as yttria-stabilized zirconia, overlying the bond coat.

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