High-temperature solar-absorptive coatings with high thermal conductivity and low emissivity, and methods for use thereof

摘要

Coatings for insolation-receiving surfaces, for example, in a power plant or industrial systems that convert solar energy to other forms of energy such as heat or electricity, are disclosed herein. The coatings can include planar particles of a material having thermal conductivity of at least 3 Watts per meter per degree Kelvin. The disclosed coatings can have high absorptivity in the solar portion of the electromagnetic spectrum (for example, the AM 1.5 spectrum), low emissivity with respect to blackbody radiation, high resistance to heat, and good thermal conductivity. Additional characteristics of the disclosed coatings include good adhesion to the metal substrate upon which they are applied, mechanical and environmental durability, and protection of corrosion of both the metal substrate and of the coating itself.