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Black Ceramic Thermal Control Coating Prepared by Microarc Oxidation

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The black thermal control coating was produced by in situ growth on an aluminum alloy by a relatively new method: microarc oxidation (MAO). In this article, the black MAO thermal control coating that had a high solar absorptance and a high infrared emittance was produced in a 0.1 mol/L NaAlO2 electrolyte system. The optical properties and phase composition of the coating across the surface to the substrate–coating interface were studied by a spectrophotometer and X-ray diffraction. Experimental results show that the MAO coating can reach a solar absorptance value >0.90 and an infrared emittance value >0.77.

Document Type: Research Article


Affiliations: Harbin Institute of Technology, Harbin 150001, China

Publication date: 2007-07-01

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