An example article may include a component (26), a substrate (12) including a first ceramic material, a joining layer (22) between the component and the substrate, and a joint surface coating (14b) between the substrate and the joining layer. The joint surface coating may include a diffusion barrier layer (18) including a second ceramic material, and a compliance layer (16) including at least one of a metal or a metalloid. An example technique may include holding a first joining surface (24) of a coated component adjacent a second joining surface (28) of a second component (26). The example technique may further include heating at least one of the coated component, the second component, and a braze material, and brazing the coated component by allowing the braze material to flow in a region between the first joining surface and the second joining surface.