Adaptively opening cooling pathway

A component for use in a hot gas path of an industrial machine, the component comprising:

• a body including an outer surface;
• a thermal barrier coating over the outer surface, the thermal barrier coating exposed to a working fluid having a high temperature;
• an internal cooling circuit in the body carrying a cooling medium;
• and
• a cooling pathway in the body and in fluid communication with the internal cooling circuit, the cooling pathway including a terminating end in the body and a length extending along and spaced internally from the outer surface by a first spacing, wherein the terminating end is spaced internally from the outer surface by a second spacing that is less than the first spacing,
• wherein in response to a spall in the thermal barrier coating occurring at a location over the terminating end and the high temperature reaching or exceeding a predetermined temperature of the body, the cooling pathway opens at the location over the terminating end and through the second spacing to allow a flow of the cooling medium therethrough.

A component for use in a hot gas path of an industrial machine, the component comprising:

• a body including an outer surface;
• a thermal barrier coating over the outer surface, the thermal barrier coating exposed to a working fluid having a high temperature;
• an internal cooling circuit in the body carrying a cooling medium;
• and
• a cooling pathway in the body and in fluid communication with the internal cooling circuit, the cooling pathway including a terminating end in the body and a surface extending along and spaced internally from the outer surface by a first spacing,
• wherein in response to a spall in the thermal barrier coating occurring at a location over the cooling pathway and the high temperature reaching or exceeding a predetermined temperature of the body, a portion of the cooling pathway other than the terminating end opens through the first spacing to allow a flow of the cooling medium therethrough, and
• the component further comprises an opening fostering surface positioned between the thermal barrier coating and the cooling pathway.