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首页> 外文期刊>Journal of Sol-Gel Science and Technology >Preparation adn Spectroscopic Characterization of Blue CoAl_2O_4 Coatings
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Preparation adn Spectroscopic Characterization of Blue CoAl_2O_4 Coatings

机译:蓝色CoAl_2O_4涂层的制备及光谱表征

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Optically selective thin films of CoAl_2O_4 with a spinel structure were produced for an automotive lamps appication by the sol-gel process using aluminum sec-butoxide,ethylacetoacetate chelating agent and cobalt nitrate hexahydrate.The use of two metal-oxide precurors is advantageous over the single bimetalkic alkoxide precursor (alumium cobalt isopropoxide),because it allows us to vary the Co/Al ratio in the precursor solution.We found that the Co/Al ratio should not exceed 0.3 if we are to achieve films with the characteristic blue colour at 700 deg C. The structural characteristics of the oxide powers were determined form infrared (IR) spectra and X-ray diffraction (XRD) analysis,while the optical properties of the films were investigated with UV-VIS spectroscopy.
机译:采用仲丁醇铝,乙酰乙酸乙酯乙酸乙酯螯合剂和六水合硝酸钴通过溶胶-凝胶法制备了具有尖晶石结构的CoAl_2O_4光学选择性薄膜,用于汽车灯具.2种金属氧化物前体的使用优于单一的金属氧化物双金属醇盐的前体(异丙醇钴铝),因为它允许我们改变前体溶液中的Co / Al比。我们发现,如果要获得700的具有特征性蓝色的薄膜,Co / Al比例不应超过0.3。通过红外(IR)光谱和X射线衍射(XRD)分析确定了氧化物粉末的结构特征,同时用UV-VIS光谱研究了膜的光学性质。

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