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- Title
Electrochemical Formation and Phase Control of Mg-Cu Alloys.
- Authors
Chen, Zeng; Wang, Bei; Li, Shengjun; Li, Wei; Wei, Chaochao; Jia, Xiyang; Zhang, Weifeng
- Abstract
Mg-Cu alloys with different phases were electrodeposited in a molten LiCl-KCl eutectic mixture containing a small amount (0.5 mol %) of MgCl2 at 673 K. The electrochemical behavior of the MgII ion and alloy formation processes were studied at inert molybdenum (Mo) and active copper (Cu) electrodes in the molten salts, respectively. Different electrochemical techniques, such as cyclic voltammetry, square-wave voltammetry, chronoamperometry, and open-circuit potentiometry were carried out to investigate the electrochemical formation mechanism of Mg-Cu alloys. Three signals, corresponding to the formation of metal Mg and two different Mg-Cu alloy phases, are observed when using cyclic voltammetry, square-wave voltammetry, and open-circuit potentiometry. Chronoamperometry studies indicate the different interfacial properties of the magnesium metal versus the Mg-Cu alloys. The results of X-ray diffraction and scanning electron microscopy show that the MgCu2 and Mg2Cu phases could be obtained at −2.30 and −2.38 V (vs. Pt), respectively.
- Subjects
MICROALLOYING; MOLYBDENUM catalysts; METALLIC composites; AMALGAMATION; CHRONOAMPEROMETRY; SCANNING electron microscopy
- Publication
ChemElectroChem, 2016, Vol 3, Issue 1, p165
- ISSN
2196-0216
- Publication type
Article
- DOI
10.1002/celc.201500325