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将工业纯铝分别用硫酸和磷酸进行阳极氯化,再交流电解着色镍制作光/热转换薄膜.绪果用砒酸阳极氧化,在所采用的工艺参数范围内着色困难,而磷酸阳极氧化着色容易。用超薄切片技术及透射电镜观察膜的形貌,发现上述结果与用两种酸阳极氧化后得到的多孔性氧化膜的孔的底部直径大小有关,而与膜上部孔径关系不大。用磷酸进行阳极氧化,寻找到一种交流电解着深黑色的方法,并获得太阳光谱范围吸收率a=0.93,远红外热幅射率e=0.26的光热转换薄膜。
The industrial pure aluminum is respectively anodized with sulfuric acid and phosphoric acid, and then the AC electrolytic colored nickel is made into an optical / thermal conversion film. The lead fruit is anodized with gallic acid and has difficulty coloring in the adopted process parameters, while phosphoric acid anodic oxidation coloring is easy . The morphology of the membrane was observed by ultrathin sectioning and transmission electron microscopy. The results were found to be related to the diameter of the bottom of the pores of the porous oxide film obtained by the two acid anodization, but not to the pore size of the upper part of the membrane. Anodizing with phosphoric acid was carried out to find a method of AC deep black electrolysis and to obtain a light-to-heat conversion film having a solar spectral range absorption of a = 0.93 and a far-infrared thermal emissivity of e = 0.26.