Solution combustion of spinel CuMn2O4 ceramic pigments for thickness sensitive spectrally selective (TSSS) paint coatings |
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| Affiliation: | 1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Research & Development Center for Eco-material and Eco-chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;1. Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur PO, Hyderabad, 500 005, India;2. Academy of Scientific and Innovative Research (AcSIR), CSIR-National Aerospace Laboratories Campus, HAL Airport Road, Kodihalli, Bangalore, 560017, India;1. Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy, and New Materials, Balapur PO, Hyderabad 500 005, India;2. Department of Physics, National Institute of Technology, Warangal 506004, Telangana, India;1. Laboratory of Inorganic Energy and Environment Materials, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China;2. School of Physics and Electronics, Hunan University, Changsha, 410082, China;1. State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;2. Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, China |
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| Abstract: | A series of spinel-type CuMn2O4 ceramic pigments were prepared by a facile and low-cost sol-gel solution combustion method and used as cost-effective materials to fabricate thickness sensitive spectrally selective (TSSS) paint coatings by a convenient spray-coating technique. The chemical component, crystalline morphology, and optical property of the copper manganese oxide ceramic pigment could be accurately controlled by altering the annealing temperature. X-ray diffraction (XRD) analysis confirmed that the ceramic pigments annealed at 500 °C for 1 h coincided well with the XRD patterns of crystalline CuMn2O4 in the JCPDS database, and there were segregated phases of CuO and Mn2O3. Furthermore, the pure spinel CuMn2O4 phase could be achieved at 900 °C for 1 h. The copper manganese oxide ceramic pigments could serve as an effective pigment for fabricating the TSSS paint coating, and the TSSS paint coatings based on ceramic pigments calcined at 900 °C showed solar absorptance of 0.895–0.905 and thermal emittance of 0.186–0.310. In addition, the accelerated thermal stability test revealed that the TSSS paint coating exhibited good thermal stability when it was exposed to air at a temperature of 300 °C for 300 h. Hence, the fabricated TSSS paint coating could be used as a solar absorber coating in the low-to-mid temperature domain. |
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| Keywords: | Sol-gel solution combustion TSSS paint coating Solar absorptance Thermal emittance Thermal stability |
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