Assembly for controlling thermal stresses in ceramic matrix composite articles

摘要

An assembly (20) and method for controlling thermal stresses within ceramic-based articles when subjected to high temperatures while supported by a metallic article. The assembly (20) includes a first body (24) formed of a metallic material and having oppositely-disposed first and second surfaces, and a second body (22) formed of a ceramic-based material and supported by the first body (24) from the first surface (26) thereof. The first and second bodies (24,22) are located in a hot gas path such that the second body (22) and the first surface (26) of the first body (24) are directly impinged by flowing hot gases. The assembly (20) further includes a substantially uniform pattern of fins (30) protruding from the second surface (28) of the first body (24), and/or an interface structure (32) between the first and second bodies (24,22) that positively retains the second body (22) to the first body (24) and thermally insulates the first body (24) from the first body (24).