Microstructured fiber interface coatings for composites
AssigneeRtx Corporation
InventorsRichard Wesley Jackson, Ying She, Gajawalli V. Srinivasan
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Abstract
Disclosed is a coated ceramic fiber including a zirconium interface coating layer deposited on the ceramic fiber, a zirconium dioxide interface coating layer adjacent to the zirconium interface coating layer, and an additional interface coating layer adjacent to the zirconium dioxide interface coating layer, wherein zirconium dioxide interface coating layer forms micro cracks after a crystal structure transformation. The coated ceramic fiber may be included in a composite material having a ceramic matrix.
Claims7
A method for forming a multi-layer interface coating onto a ceramic fiber comprising:
- depositing a zirconium interface coating layer on the ceramic fiber;
- oxidizing a portion of the zirconium interface coating layer to form a zirconium dioxide interface coating layer:
- depositing an additional interface coating layer on the zirconium dioxide interface coating layer:
- and
- heat treating the multilayer coating such that the zirconium dioxide interface coating layer forms micro cracks after a crystal structure transformation.
Dependencies are inferred from the claim text.