The invention relates to the technical field of surface engineering, and particularly provides a thermal control coating of a spacecraft heat radiator and a preparation method of the thermal control coating. A titanium or aluminum oxide adhesion enhancement transition layer with the thickness of 5-20 nm, a silver reflection layer with the thickness of 100-400 nm, an aluminum oxide oxidation inhibition protection layer with the thickness of 50-200 nm and a silicon oxide emissivity regulation and control layer with the thickness of 100-400 nm are sequentially prepared on the surface of a base material through a magnetron sputtering method. The thermal control coating can be applied to the side, facing strong infrared radiation, of a spacecraft, effectively reduces absorption of energy of the wave band of 0.3-25 microns, improves the heat dissipation capacity in the infrared radiation environment, can also be applied to the portion, facing an infrared optical element, of the spacecraft, effectively reduces the influence of thermal radiation of the spacecraft on infrared optical detection, and improves the detection precision. The method is simple, is high in process implementation, can be applied to the surfaces of rigid and flexible base materials such as aluminum alloy, titanium alloy, carbon fiber composite materials and polyimide films, and is suitable for the surfaces of the base materials in various shapes such as planes, curved surfaces and steps.

    本发明涉及表面工程技术领域,具体而言,提供了一种航天器热辐射器的热控涂层及其制备方法。采用磁控溅射法在基材表面上依次制备厚度为5~20nm的钛或氧化铝附着力增强过渡层、厚度为100~400nm的银反射层、厚度为50~200nm的氧化铝氧化抑制保护层、以及厚度为100~400nm的氧化硅发射率调控层。该热控涂层可以应用于航天器朝向较强红外辐射的一面,有效减少对0.3~25μm波段能量的吸收,提高在红外辐射环境下的散热能力,还可以应用于航天器朝向红外光学元件的部位,有效减少自身热辐射对红外光学探测的影响,提高探测精度。本发明方法简单、工艺实施性强,可以应用于铝合金、钛合金、碳纤维复合材料、聚酰亚胺薄膜等刚性和柔性基材表面,适应于平面、曲面、台阶等各种形状的基材表面。


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    Title :

    Thermal control coating of spacecraft heat radiator and preparation method of thermal control coating


    Additional title:

    一种航天器热辐射器的热控涂层及其制备方法


    Contributors:
    HE YANCHUN (author) / WANG HU (author) / WANG LANXI (author) / LI JIN (author) / CHEN YANG (author) / LI KUN (author) / WANG ZHIMIN (author) / WU CHUNHUA (author) / YANG MIAO (author) / LI XUELEI (author)

    Publication date :

    2024-12-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL / B64G Raumfahrt , COSMONAUTICS



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