The disclosure provides a method for generating a metallic coating on a substrate using a mixture comprising a precursor compound typically of chromium oxide , a chemical agent typically comprising NHz, and an inert transport fluid . The precursor compound and chemical agent are generally in the form of particulates having mean diameters less than about 100 microns , and the transport fluid is present in an amount sufficient to facilitate application of the mixture to a substrate . The mixture is applied to a substrate and the coated substrate is heated to a temperature exceeding the decomposition temperature of the chemical agent , generating a reducing gas typically comprising CO, Hₓ, and/or NHₓ. In a particular embodiment , the precursor compound isCrO₂, Cr₃O₄, CrO, or mixtures thereof , the chemical agent is urea , and the coated substrate is placed in a reactor havingan inert atmosphere and subjected to a temperature of about 700° C . for about 5 minutes while maintaining an inert gas flow through the reactor.
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