A high temperature splash plate for use in the combustor of a gas turbine engine
that also is a specular optical reflector. A thin layer of a high temperature reflector
is applied to the surface of the splash plate of the component that forms a boundary
for hot combustion gases. The component typically includes a thermal barrier coating
overlying the high temperature metallic component that permits the component to
operate at elevated temperatures. The thermal barrier coating must be polished
in order to provide a surface that can suitably reflect the radiation into the
gas flow path. A thin layer of the high temperature reflector then is applied over
the polished thermal barrier coating by a process that can adequately adhere the
reflector to the polished surface without increasing the roughness of the surface.
The surface reflects radiation in the direction of the turbine back into the hot
gas flow path. The reflected radiation is not focused onto any other hardware component.
The design of the splash plate is such that the radiation is not directed to an
adjacent component, which only serves to increase the temperature of the wall of
the component.