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US 7,575,418 B2Granted
Erosion and wear resistant protective structures for turbine components
AssigneeGeneral Electric Company
InventorsMichael Francis Xavier Gigliotti, Canan Uslu Hardwicke, Liang Jiang, Don Mark Lipkin, Samuel Vinod Thamboo
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Abstract
Disclosed herein is a turbine component comprising a substrate; and a protective structure formed on the substrate, wherein the protective structure comprises an α-β titanium alloy, a β-titanium alloy or a near-β titanium alloy. Disclosed herein too is a process for providing a protective structure to a turbine component, comprising affixing a protective structure on a turbine component; wherein the protective structure comprises an α-β titanium alloy, a near-β titanium alloy or a β-titanium alloy.
Claims20
A turbine component, comprising:
- a cast, wrought, or cast-and-wrought substrate;
- a diffusion-mitigating layer affixed to the substrate, wherein the diffusion-mitigating layer is selected from a group consisting of vanadium, niobium, hafnium, tantalum, zirconium, and a combination comprising at least one of the foregoing metals;
- and
- an erosion protective structure affixed to a surface of the diffusion-mitigating layer that is opposed to the surface in contact with the substrate, wherein the protective structure comprises an α-β titanium alloy, a near-β titanium alloy or a β-titanium alloy, wherein the α-β titanium alloy, the near-β titanium alloy or the β-titanium alloy each comprise a β phase that has a titanium rich body-center-cubic structure and belongs to Pearson symbol cl2 or space group Im 3m;
- and wherein the protective structure forms the outer layer of the turbine component.
2 more elements
Dependencies are inferred from the claim text.