摘要
热控涂层是星载产品中一种非常有效的被动式热控制方法,使星载产品温度能维持在正常工作范围。本文通过高功率微弧氧化技术沉积制备具有低太阳吸收比和高半球发射率的Al2O3热控涂层,通过纳米TiO2粒子掺杂于微弧氧化Al2O3介质基体而形成纳米粒子在介质基体中呈岛状散落分布的TiO2/Al2O3复合陶瓷涂层。利用SEM、EDS、XRD等分析手段对涂层的微观结构和相组成进行分析,并对涂层的太阳吸收比和半球发射率进行了测定。结果表明,在6063铝合金表面获得了均匀、致密、结合牢固的TiO2/Al2O3镀层。
Thermal control coating is a very effective passive thermal control method for space products, which can ensure that the temperature of space products to maintain in the normal working range. In this paper,Al2O3 thermal control coatings with low solar absorption ratio and high hemispheric emissivity were deposited by high power micro-arc oxidation technology. TiO2/Al2O3 composite ceramic coatings were formed by doping nano-sized titanium oxide particles into the matrix of micro-arc oxidation Al2O3. The microstructure and phase composition of the coatings were analyzed by SEM,EDS and XRD. And the solar absorption ratio and hemispheric emissivity of the coatings were measured. The results showed that the uniform,compact and tight-bonded TiO2/Al2O3 coating could be obtained on the surface of 6063 Al alloy substrates.
作者
丁良兵
刘东光
DING Liangbing;LIU Dongguang(No. 38 Institute of China Electronic Technology Corporation,Hefei 230088,China;Hefei University of Technology,Hefei 230009,China)
出处
《电镀与精饰》
CAS
北大核心
2019年第8期25-28,共4页
Plating & Finishing
