Reflective coating for components

A component for use with a heat source having a peak emission wavelength, the component comprising:

• a substrate formed from a metallic or ceramic material;
• a thermal barrier coating positioned on the substrate;
• a ceramic reflective coating comprising a single layer and formed from a first material and integral with the thermal barrier coating:
• an inclusion embedded within the reflective coating, the inclusion comprising a second material different from the first material and having a first index of refraction;
• and
• a hollow pore embedded within the reflective coating and spaced apart from the inclusion, the pore having a second index of refraction different from the first index of refraction;
• wherein both the inclusion and the hollow pore are situated proximate a top surface of the single layer.

A method of making a component for use with a heat source having a peak emission wavelength, the method comprising:

• positioning a thermal barrier coating on the component;
• determining the peak emission wavelength incident upon the component;
• forming a single-layer reflective coating from a first material, the reflective coating comprising;
• a first inclusion embedded within the reflective coating, the first inclusion comprising a second material different from the first material having a first index of refraction;
• and
• a second inclusion embedded within the reflective coating and spaced apart from the first inclusion, the second inclusion comprising a third material different from the first and second materials and having a second index of refraction different from the first index of refraction;
• wherein both the first and second inclusions are situated proximate a top surface of the single layer;
• and
• integrating the reflective coating with the thermal barrier coating.