Effects of additive NaI on electrodeposition of Al coatings in AlCl 3 -NaCl-KCl molten salts
作者： Tianyu Yao , Haiyan Yang , Kui Wang , Haiyan Jiang , Xiao-Bo Chen
DOI: 10.1007/S11705-020-1935-8
关键词:
摘要: Effects of NaI as an additive on electrodeposition Al coatings in AlCl3-NaCl-KCl (80-10-10 wt-%) molten salts electrolyte at 150 °C were investigated by means cyclic voltammetry, chronopotentiometry, scanning electron microscopy and X-ray diffraction (XRD). Results reveal that addition the intensifies cathodic polarization, inhibits growth deposits increases number density charged particles. The proceeds via three-dimensional instantaneous nucleation which however exhibits irrelevance with NaI. Galvanostatic deposition results indicate could facilitate formation uniform deposits. A compact coating consisting average particle size 3 µm was obtained a current 50 mA·cm−2 10 wt-% XRD analysis confirmed contribute to preferred crystallographic orientation along (220) plane.
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