Method for manufacturing a erosion preventative diamond-like coating for a turbine engine compressor blade
AssigneeHoneywell International Inc.
InventorRobert L. Power
Life of this patent
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Abstract
Methods for making an erosion resistant gas turbine engine compressor airfoil substrates coated with a diamond-like coating (DLC), wherein the coating airfoil substrates are protected from ingested abrasive particulates, may include the step of performing a hydrogen-free chemical vapor deposition (CVD) process by ablation of a graphite target in a vacuum. The DLC may be comprised predominantly of sp3 (tetrahedral) carbon, and may be devoid of detectable amounts of hydrogen.
Claims20
A method for making a compressor component for a gas turbine engine, comprising:
- a) providing an airfoil substrate having a metal airfoil substrate surface;
- and
- b) depositing a diamond-like coating directly on said metal airfoil substrate surface, wherein said airfoil substrate comprises an axial flow compressor blade or a stator vane.
A method for maldng a compressor component for a gas turbine engine, comprising:
- a) providing an airfoil substrate having a substrate surface;
- and
- b) depositing a diamond-like waling directly on said substrate surface, wherein said airfoil substrate comprises an axial flow compressor blade or a stator vane, wherein said step b) comprises deposfting said diamond-like coating via a chemical vapor deposition process by ablation of a graphite target, wherein said diamond-like coating comprises at least about 90 wt % sp3 carbon.
A method for making a compressor component for a gas turbine engine, comprising:
- a) providing an airfoil substrate having a substrate surface;
- b) degreasing said substrate surface;
- and
- c) after said step b), depositing a diamond-like coating directly on said substrate surface in an environment substantially absent of hydrogen, wherein said substrate surface is curved and said airfoil substrate comprises a material selected from the group consisting of an iron-based alloy, a titanium-based alloy, a nickel-based alloy, and a cobalt-based alloy.
Dependencies are inferred from the claim text.