POLYMER MATRIX-CERAMIC MATRIX HYBRID COMPOSITES FOR HIGH THERMAL APPLICATIONS

摘要

A composite has a) a PMC layer, and b) a tile layer comprising a plurality of Ox/Ox CMC tiles each has: i) a central portion, ii) an outer portion disposed surrounding the central portion, the bottom surface of the outer portion is disposed flush with the bottom surface of the central portion, the tile layer forms a smooth continuous top surface and a smooth continuous bottom surface, and the tiles are disposed with respect to one another such that each tile is inverted with respect to an adjoining tile, and iii) one or more overlap joints formed by the overlapping of the outer portions of adjoining tiles, so that hot gases entering the smooth top surface of the tile layer between abutting outer and central periphery segments must travel laterally between the overlapping outer portions of adjoining tiles to reach the top surface of the PMC layer.

主权项

1. A composite comprising:
a) a PMC layer; and b) a tile layer bonded to the PMC layer, the tile layer comprising a plurality of Ox/Ox CMC tiles, each Ox/Ox CMC tile comprising:
i) a central portion comprising a bottom surface, a top surface, and one or more central portion periphery segments;ii) an outer portion disposed surrounding the central portion, the outer portion comprising a bottom surface and one or more outer portion periphery segments;wherein the bottom surface of the outer portion is disposed flush with the bottom surface of the central portion;wherein each central portion periphery segment abuts or is in very close proximity to an outer portion periphery segment, and each outer portion periphery segment abuts or is in very close proximity to either a central portion periphery segment or to an outer portion. periphery segment, such that the tile layer forms a smooth continuous top surface and a smooth continuous bottom surface; andwherein the one or more tiles are disposed with respect to one another such that each tile is inverted with respect to an adjoining tile; andiii) one or more overlap joints formed by the overlapping of the outer portion of a tile and the outer portion of an adjoining tile, so that hot gases entering the smooth top surface of the tile layer between abutting outer and central periphery segments must travel laterally between the overlapping outer portions of adjoining tiles to reach the top surface of the PMC layer.