Internal thermal coatings for engine components

A hot gas path component for an engine, the hot gas path component comprising:

• a substrate extending between an outer surface and an inner surface opposite the outer surface, the outer surface being configured to be exposed to combustion gases flowing within a hot gas path of the engine and the inner surface being configured to be exposed to a cooling medium, the substrate being formed from a non-metallic composite material;
• a thermal coating disposed on the inner surface of the substrate, the thermal coating being formed from a material having a lower thermal conductivity than the non-metallic composite material,
• wherein the thermal coating provides for a change in a thermal gradient experienced across the hot gas path component between the outer and inner surfaces of the substrate.

The hot gas path component of claim 11, wherein the thermal coating is applied to the inner surface so as to have a uniform distribution along at least a portion of the inner surface.

The hot gas path component of claim 12, wherein the thermal coating defines a substantially constant thickness along the at least a portion of the inner surface.