Infrared emissivity of Sr doped lanthanum manganites in coating form |
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| Authors: | Xingmei Shen Liaosha LiXingrong Wu Zhifang GaoGuoyue Xu |
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| Affiliation: | a Anhui Provincial Key Laboratory of Metallurgy Engineering & Resources Recycling, Anhui University of Technology, Ma’anshan, Anhui Province 243002, China
b College of Material Science & Engineering, Nanjing University of Aeronautics and Astronautics, Yu Dao Street 29, Nanjing 210016, China |
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| Abstract: | The Sr doped lanthanum manganite coatings were prepared using La0.8Sr0.2MnO3 particles and epoxy modified polyurethane as pigment and resin matrix, respectively. The structure, morphology, surface roughness and infrared normal emissivity (?N) in the 3-5 and 8-14 μm wavebands of the samples were systematically investigated. With the increase of La0.8Sr0.2MnO3 pigment, the ?N of the coatings decreases and the ?N values in the 8-14 μm waveband are higher than those in the 3-5 μm waveband. The surface roughness has no significant effect on the infrared emissivity of LSMO coatings. For 50% LSMO coating, the sample shows variable-emissivity property in the 8-14 μm waveband and the emissivity property remains unchanged before and after ultraviolet irradiation. |
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| Keywords: | Ceramics Solid state reaction Optical properties Light absorption and reflection |
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