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US 8,708,659 B2Granted
Turbine engine component having protective coating
AssigneeUnited Technologies Corporation
InventorsBrian S. Tryon, Darryl Stolz, Paul L. Reynolds, John J. Schirra
Life of this patent
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Abstract
A turbine engine apparatus includes a structural component made of a superalloy material. A protective coating is disposed on the structural component and has a composition that consists essentially of up to 30 wt % cobalt, 5-40 wt % chromium, 7.5-35 wt % aluminum, up to 6 wt % tantalum, up to 1.7 wt % molybdenum, up to 3 wt % rhenium, up to 5 wt % tungsten, up to 2 wt % yttrium, 0.05-2 wt % hafnium, 0.05-7 wt % silicon, 0.01-0.1 wt % zirconium, and a balance of nickel.
Claims25
A turbine engine apparatus comprising:
- a rotor disk made of a superalloy material;
- and
- a protective coating disposed on the rotor disk, the protective coating having a composition in accordance with the composition of the superalloy material of the rotor disk such that fatigue of the rotor disk is not debited, the composition of the protective coating consisting essentially of up to 30 wt % cobalt, 5-40 wt % chromium, 4.0-35 wt % aluminum, up to 6 wt % tantalum, up to 1.7 wt % molybdenum, up to 3 wt % rhenium, up to 5 wt % tungsten, up to 2 wt % yttrium, up to 2 wt % hafnium, 0.05-7 wt % silicon, 0.01-0.2 wt % zirconium, and a balance of nickel.
Dependencies are inferred from the claim text.