High temperature metal carbide coatings
AssigneeHoneywell International Inc.
InventorsMehrad Mehr, Bahram Jadidian
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Abstract
An example method for forming a high temperature coating includes depositing a carbon layer on to a surface of a composite article using chemical vapor deposition. The composite substrate includes a composite substrate including a carbon matrix. The surface of the composite article includes one or more surface voids. The method further includes applying a metal slurry to the surface of the composite article following the deposition of the carbon layer and reacting a metal of the metal slurry with carbon of the carbon layer to form an antioxidant layer of a metal carbide on the composite article.
Claims20
A method for forming a coating, comprising:
- depositing a carbon layer on to a surface of a composite article using chemical vapor deposition (CVD), wherein the composite article includes a composite substrate that includes a carbon matrix, and wherein the surface of the composite article includes one or more surface voids;
- applying a metal slurry to a surface of the carbon layer following the deposition of the carbon layer;
- and
- reacting a metal of the metal slurry with carbon of the carbon layer to form an antioxidant layer of a metal carbide on the composite article.
A high temperature article, comprising:
- a composite substrate that includes a carbon matrix;
- and
- a coating on a surface of the composite substrate, wherein the coating comprises a metal-rich antioxidant layer of a metal carbide on the surface of the composite substrate,
- wherein the metal carbide of the metal-rich antioxidant layer is formed from carbon of a carbon layer deposited using chemical vapor deposition, and
- wherein the metal-rich antioxidant layer extends into one or more surface voids of the surface of the composite substrate.
Dependencies are inferred from the claim text.