Magnetron Sputtering High Temperature Mo-Al<sub>2</sub>O<sub>3</sub> Cermet Solar Selective Coatings

作者：Xin Du, Cong Wang, Tian Min Wang, Bu Liang Chen, Long Zhou, Ning Ru · 发表于：Materials science forum · 年份：2007 · DOI：10.4028/www.scientific.net/msf.546-549.1773 · 被引用次数：4 · 研究领域：Solar Thermal and Photovoltaic Systems、Heat Transfer and Boiling Studies、High-Temperature Coating Behaviors

Based on double cermet layer structure, Mo-Al2O3 cermet solar selective coating was prepared on stainless steel substrate. A solar absorptance of 0.92 and normal emittance of 0.19 at room temperature have been achieved. Vacuum annealing treatment was done and its influences on the solar selective performance was discussed. Absorptance changed between 0.90 and 0.92 under the selected annealing temperature range of 350-800°C, and emittance varied from 0.19 to 0.23 when heated at 650°C. The microstructures before and after annealing process at different temperatures were investigated.