Nanometer silicon carbide-series infrared radiation coating and preparation method thereof

The invention belongs to the field of far infrared energy-saving coating used for a high-temperature industrial furnace, which particularly relates to a nanometer silicon carbide-series infrared radiation coating and a preparation method thereof. The coating is composed of a powder radiation material, a binding material, a slurry accessory ingredient and water, wherein the mass ratio of the waterto the powder radiation material is (0.5-2):1; the binding material is 10-30% of the total mass of powder radiation material; the slurry accessory ingredient is 0.1-3% of the total mass of powder radiation material; and the powder radiation material is composed of nanometer silicon carbide powder, zirconia powder, chromium hemitrioxide powder, ferric oxide powder, nickel oxide powder, bentonite powder and siliceous dust powder. The infrared energy-saving radiation coating disclosed by the invention has the advantages of high radiation coefficient and excellent thermal shock resistance. After high-temperature sintering, a sintering layer is formed on a refractory brick or cellucotton, the sintering layer can be firmly adhered on the surface of the lining of a kiln to perform the energy-saving effect on increasing radiant heat utilization and reducing heat loss.