张添,刘静,孙田津,石丽萍,胡锐,帅威,何艺彬,祝培旺,肖刚

• 1:浙江大学能源高效清洁利用全国重点实验室
• 2:中国石油新疆油田分公司采油工艺研究院
• 3:杭州华源前线能源设备有限公司
• 4:浙江大学青山湖能源研究基地

摘要(Abstract)：

塔式光热布雷顿循环发电系统的布置灵活，其吸热器工作温度较高，太阳能波动容易造成吸热器材料热疲劳或表面超温，亟需探索平抑吸热器温度波动的有效途径。开发了一种基于可逆氧化还原反应的锰基热化学热防护涂层，当太阳辐射增强且温度超过978℃时，涂层材料发生还原吸热反应，降低升温速率；当太阳辐射减弱且温度低于878℃时，发生氧化放热反应，减缓降温速率，进而平抑吸热器表面温度波动。研究表明：涂层材料与黏结剂的质量比为4:3时附着力可达国家标准的最高级，太阳光加权平均吸收率达到94.93%；在950℃恒温老化500 h、冷热交变老化100次循环以及氧化还原反应试验200次循环后，涂层加权平均吸收率仅分别衰减0.82百分点、0.98百分点和2.61百分点，且附着力保持在最高级；在±9.7 kW/m~2的聚光辐射能流突变条件下，前100 s升温和降温速率分别降低59.66%和67.09%，升温和降温20℃所需的时间分别延长182.50%和438.60%。锰基热化学涂层表现出优秀的抗老化性能，并能有效平抑吸热器的温度波动，在塔式光热布雷顿循环系统中具有广阔的应用前景。

关键词(KeyWords)： 热化学材料;涂层;太阳能吸热器;热防护

Abstract:

Keywords:

基金项目(Foundation): 内蒙古自治区“揭榜挂帅”项目（2024JBGS0026）;; 国家杰出青年基金项目（52325605）~~

作者(Author): 张添,刘静,孙田津,石丽萍,胡锐,帅威,何艺彬,祝培旺,肖刚

DOI: 10.19666/j.rlfd.202503041

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