State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
Shaanxi Huaqin Technology Industry Co., Ltd., Xi'an 710119, China.
J Colloid Interface Sci. 2023 Sep;645:570-579. doi: 10.1016/j.jcis.2023.04.175. Epub 2023 May 6.
Multiband compatible stealth engineering with controllable visible light-infrared (VIS-IR) features and radar wave absorption is urgently needed to improve the survivability of advanced military equipment. CrO has good visible light stealth performance under green background, but it is lack of IR and radar multi-band stealth properties. Herein, a core-shelled CrO@stannic antimony oxide (ATO) structure was developed to enhance the IR-radar compatible stealth properties of CrO by in-situ precipitation method, concurrently maintaining its visible light stealth property. The morphology, conductivity, and infrared stealth properties of the CrO@ATO hybrids were influenced by the calcination temperature, and the IR and radar stealth performance were tunable by ATO content. The lowest emissivity of CrO@ATO pigments is 0.852, reduced by 10% than pure CrO. The CrO@ATO filled silicone resin coatings possessed good thermal stability and IR stealth stability. Benefiting from the enhanced interfacial polarization and conductive loss, the CrO@ATO exhibited an effective absorption bandwidth of 2 GHz in the X band, with respect to pure CrO without radar absorption property. The CrO@ATO structure opens an avenue for advanced VIS-IR-Radar compatible stealth materials.
多波段兼容的隐形工程具有可控的可见光-红外（VIS-IR）特性和雷达波吸收能力，这对于提高先进军事装备的生存能力至关重要。CrO 在绿色背景下具有良好的可见光隐形性能，但缺乏红外和雷达多波段隐形特性。在此，通过原位沉淀法开发了一种核壳结构的 CrO@氧化锡锑（ATO）结构，通过原位沉淀法增强了 CrO 的红外-雷达兼容隐形性能，同时保持其可见光隐形性能。CrO@ATO 杂化物的形态、电导率和红外隐形性能受煅烧温度的影响，ATO 含量可调节红外和雷达隐形性能。CrO@ATO 颜料的最低发射率为 0.852，比纯 CrO 降低了 10%。填充有 CrO@ATO 的硅树脂涂层具有良好的热稳定性和红外隐形稳定性。得益于增强的界面极化和导电损耗，CrO@ATO 在 X 波段表现出有效的吸收带宽为 2 GHz，而纯 CrO 则没有雷达吸收性能。CrO@ATO 结构为先进的 VIS-IR-Radar 兼容隐形材料开辟了一条途径。
