文献类型：期刊文献

英文题名：Effect of Doping Content of MgO on Solar Absorptivity to IR Emissivity Ratio of Al2O3 Coatings

作者：Zhu, Han[1,2];Wang, Weize[1];Ye, Dongdong[3];Yang, Ting[1];Li, Dongpeng[1];Yang, Min[1];Yuan, Baohan[1];Wang, Yihao[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]China Coal Xinji Lixin Power Generat Co Ltd, Bozhou 236000, Peoples R China;[3]Anhui Polytech Univ, Sch Artificial Intelligence, Wuhu 241000, Peoples R China

年份：2022

卷号：12

期号：12

外文期刊名：COATINGS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000900409500001)】；

基金：This research is sponsored by the National Natural Science Foundation of China (52175136, 52130511), Science Center for Gas Turbine Project (P2021-A-IV-002-002), The National High Technology Research and Development Program of China (2021YFB3702200), Key Research and Development Projects in Anhui Province (2022a05020004).

语种：英文

外文关键词：solar probe; solar absorptivity to infrared emissivity ratio; grain size

摘要：High-emissivity coatings are often used on the surfaces of solar probes to block heat from the sun. Therefore, improving the thermal control ability is the standard for determining the quality of the coatings. In this study, MgO was doped into Al2O3 to improve the thermal control ability of the coatings and to analyse the effect of different MgO doping contents. The solar absorptivity to infrared (IR) emissivity ratio (alpha/epsilon) was used to evaluate the thermal control ability of the coatings. The results showed that 5 wt.% MgO doping content is the best choice. The main reason for the change in alpha/epsilon is related to the doping of MgO, which affects the grain size of Al2O3.