Cobalt oxide-iron oxide selective coatings for high temperature applications

Abstract

Cobalt oxide-iron oxide coatings on stainless steel have been prepared by spray pyrolysis technique. These coatings have absorptance (α) = 0.94 and emittance (ε₁₀₀) = 0.20 which are much better values than for cobalt oxide or iron oxide alone on stainless steel substrates. The coatings have been found to be stable for temperatures upto 400° C.