Formation of Imprints and Methodology for Strengthening a Surface Bond in a Hybrid Ceramic Matrix Composite Structure

摘要

A hybrid ceramic matrix composite structure and method for fabricating such an structure are provided. A ceramic matrix composite substrate 12 includes a plurality of layers of ceramic fibers. A plurality of spaced apart imprints 22 is disposed in at least one of the plurality of layers. An outer surface of a subsequent layer disposed over the layer with the imprints to influence a texture of the outer surface of the substrate by defining a plurality of indent regions 32 on the outer surface of the substrate. A ceramic coating 14 is deposited on the surface of the substrate. The plurality of indent regions 32 constitutes a bond-enhancing arrangement between the surface of the substrate and a corresponding boundary of the coating.