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Electrodeposition of Aluminium-Vanadium Alloys from Chloroaluminate Based Molten Salt Containing Vanadium Ions
Metals ( IF 2.9 ) Pub Date : 2021-01-10 , DOI: 10.3390/met11010123
Vesna S. Cvetković , Nataša M. Vukićević , Dominic Feldhaus , Ksenija Milicevic-Neumann , Tanja S. Barudžija , Bernd Friedrich , Jovan N. Jovićević

The Al-V alloys were synthetized by potentiostatic electrodeposition onto a glassy carbon electrode from equimolar AlCl3 + NaCl bath containing vanadium ions at 200 °C. The alloy deposits were characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. The deposits were identified as Al3V and AlV3 alloys. It was found that intermetallic alloys were synthetized during aluminium underpotential deposition onto vanadium metal that was previously deposited on the glassy carbon electrode by diffusion-controlled overpotential deposition. Alloys were the result of solid-state interdiffusion between the initially deposited vanadium and the subsequently deposited aluminium. As a source to secure a constant concentration of vanadium in the electrolyte during deposition, vanadium anodic dissolution, and VCl3 melt addition were studied. The effect of vanadium ion concentration in the electrolyte on the composition and the surface morphology of the obtained deposits was investigated. The results indicate that controlled vanadium and aluminium codeposition could be a further step to the successful development of an advanced technology for Al3V and AlV3 alloy synthesis.

中文翻译:

从含钒离子的氯铝酸盐基熔融盐中电沉积铝钒合金

通过在200°C下从含钒离子的等摩尔AlCl 3 + NaCl浴中将恒电位电沉积到玻碳电极上来合成Al-V合金。通过X射线衍射,扫描电子显微镜和能量色散光谱对合金沉积物进行表征。沉积物被确定为Al 3 V和AlV 3合金。已发现金属间合金是在铝的欠电位沉积过程中合成到钒金属上的,钒金属事先通过扩散控制的过电位沉积而沉积在玻璃碳电极上。合金是最初沉积的钒和随后沉积的铝之间固态相互扩散的结果。作为在沉积,钒阳极溶解和VCl 3期间确保电解质中钒浓度恒定的来源研究了熔融添加。研究了电解液中钒离子浓度对所获得沉积物的组成和表面形态的影响。结果表明,受控的钒和铝共沉积可能是成功开发Al 3 V和AlV 3合金合成先进技术的又一步。
更新日期:2021-01-10
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