کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
814596 | 906258 | 2016 | 5 صفحه PDF | دانلود رایگان |
Electrochemical preparation of different phases Al-Y alloys were investigated in LiCl-KCl-AlCl3-Y2O3 melts at 773 K by cyclic voltammetry, square wave voltammetry, open circuit chronopotentiometry and polarization curve. The electrochemical measurements show that the underpotential deposition (UPD) of Y on pre-deposited Al forms two Al-Y intermetallic compounds. The results of X-ray diffraction (XRD) indicate that the two different Al-Y intermetallic compounds are Al2Y and α-Al3Y. The microstructure and the micro-zone chemical composition of Al-Y alloys were characterized by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS), respectively. The results illustrate that element Y is mainly distributed on nubby precipitates. Different phases Al-Y alloys can be obtained by adjusting the concentration of AlCl3.
Journal: Rare Metal Materials and Engineering - Volume 45, Issue 2, February 2016, Pages 272–276