锌改性微弧氧化热控涂层的研究进展

航天器在轨工作时，由于处于独特的空间环境，将面对各种极端条件。因此为保障其安全稳定地运行和工作，在航天器结构材料表面构筑具有低吸收性能与高发射性能的热控涂层成为研究热点。微弧氧化(MAO)技术是一种新兴的热控涂层制备方法，具有操作简易、组成可调控性、涂层致密以及广泛适用性等优点，适用于制备长服役期高性能热控涂层。综述锌改性微弧氧化热控涂层的研究进展，阐述了材料热控性能的评价指标及热控材料的分类，重点概述了改性剂锌源种类(如Zn²⁺或ZnO纳米粒子)对微弧氧化过程、反应机理、涂层结构和组成以及热控性能等的影响。最后，针对原位构筑MAO热控涂层现在主要存在的问题进行了分析，并对未来发展趋势进行了展望。

Research Progress of Zinc Modified Micro-arc Oxidation Thermal Control Coatings

The spacecraft running in orbit will face various extreme conditions due to the unique space environment. In order to ensure the safe and efficient work of spacecraft, the thermal control coatings with low absorption performance and high emission performance on the surfaces of spacecraft structure materials has become a research hotspot. Micro arc oxidation (MAO) technology is a new method for the preparation of thermal control coatings. It has the advantages of simple operation, controllable composition, compact structure, and wide applicability. It is suitable for the preparation of high performance thermal control coatings with long service life. In this paper, the research progress of zinc modified micro arc oxidation thermal control coatings is reviewed. The evaluation indexes of thermal control properties of materials and the classification of thermal control materials are described. The effects of the types of zinc source (such as Zn2+ or ZnO nanoparticles) on the process, reaction mechanism, coating structure and composition, and thermal control performance of the coating are emphatically summarized. Finally, the existing problems of MAO thermal control coating are analyzed, and the future development trend is prospected.