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针对航天器在地面装配、测试期间镁合金材料防腐蚀和在轨期间镁合金材料高发射率辐射换热需求,通过涂层组分配比、涂层厚度对涂层性能影响研究,制备了一种半球发射率(εH)≥0.88、真空总质量损失(TML)≤1%、可凝挥发物(CVCM)≤0.1%的防腐-热控一体化涂层。制备的涂层可耐受1 008 h中性盐雾试验、504 h湿热试验和-196~100℃的100次冷热交变试验,具备良好的防腐蚀和热控性能,可用于航天器镁合金材料表面防腐和热控处理。
Aiming at the requirements of spacecraft on the ground assembly, corrosion resistance of magnesium alloy during testing and high emissivity heat transfer of magnesium alloy during orbit, the effects of coating composition and coating thickness on coating performance were studied. Hemispherical emissivity (εH) ≥0.88, total mass loss (TML) ≤1%, anticorrosion-thermal control integrated coating with CVCM ≤0.1%. The prepared coating can withstand 1 008 h neutral salt spray test, 504 h hot and humid test and 100 hot and cold alternating test of -196 ~ 100 ℃, with good anti-corrosion and thermal control properties, can be used for spacecraft magnesium Anti-corrosion and thermal control of alloy materials.