论文部分内容阅读
The mechanism of the electrolytic codeposition of Y-Al alloy in molten LiF-AlF3-Al2O3-YF3, LiF-YF3-Y2O3-AlF3 and LiF-YF3-Y2O3-Al2O3 systems was investigated by means of cyclic voltammetry. The electrodeposited products were analysed by X-ray diffraction. The results show that the electrolytic codeposition of Y-Al alloy in the LiF-YF3-Y2O3-Al2O3 system without AlF3 can be achieved at the same potential for Y(Ⅲ) and Al(Ⅲ) which have great difference in deposition potential. It is beneficial to codeposition of Y(Ⅲ) and Al(Ⅲ) when temperature rises. The potential of beginning codeposition is about -0.85 V (vs Pt reference electrode), but only at the potential of -0.95 V or more negative can Y-based Al alloy containing a great amount of yttrium be obtained.