Open AccessElectrochemical deposition of La-Mg alloys in LaCl3-MgCl2-KCl system with molten salt electrolysis process
Author(s) -
Kumar Riddhiman Sahoo,
Harinder Singh,
N. Krishnamurthy
Publication year - 2014
Publication title -
journal of mining and metallurgy section b metallurgy
Language(s) - English
Resource type - Journals
eISSN - 2217-7175
pISSN - 1450-5339
DOI - 10.2298/jmmb130214013k
Subject(s) - electrolysis , inductively coupled plasma , molten salt , magnesium , scanning electron microscope , electrochemistry , analytical chemistry (journal) , materials science , cathode , current density , deposition (geology) , alloy , chloride , energy dispersive x ray spectroscopy , metallurgy , chemistry , plasma , electrolyte , paleontology , physics , electrode , quantum mechanics , chromatography , sediment , biology , composite material
La-Mg alloys of different compositions were prepared by electrolysis of LaCl3-MgCl2-KCl melts. Different phases of La-Mg alloys were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Energy dispersive spectrometry (EDS) and Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) analyses showed that chemical compositions of La-Mg alloys were consistent with phase structures of XRD pattern, and magnesium content in the alloy could be controlled by electrolysis parameters. The effects of various process parameters such as concentration of magnesium chloride in the bath, temperature of electrolysis and cathode current density on the current efficiency have been investigated. A maximum current efficiency of 85% and yield of 80% was obtained from the bath at 12.5A/cm2 current density at an operating temp 850°C
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