Fiber having integral weak interface coating, method of making and composite incorporating the fiber
AssigneeRaytheon Technologies Corporation
InventorsPaul Sheedy, Neal Magdefrau, Wayde R. Schmidt
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Abstract
Disclosed is a method of coating a high temperature fiber including depositing a base material on the high temperature fiber using atomic layer deposition, depositing an intermediate material precursor on the base material using molecular layer deposition, depositing a top material on the intermediate material precursor or the intermediate layer using atomic layer deposition, and heat treating the intermediate precursor. The intermediate material in the final coating includes a structural defect, has lower density than the top material or a combination thereof. Also disclosed are the coated high temperature fiber and a composite including the high temperature fiber.
Claims7
A method of coating a high temperature fiber comprising depositing a base material on the high temperature fiber using atomic layer deposition, depositing an intermediate material precursor on the base material by molecular layer deposition, depositing a top material on the intermediate material precursor or intermediate material by atomic layer deposition, and heat treating the intermediate layer precursor to form the intermediate material in contact with the base material, wherein the intermediate layer comprises a structural defect, has a lower density than the top material or a combination thereof.
Dependencies are inferred from the claim text.