Home Metallic Materials - Kovové materiály 2016 Metallic Materials Vol. 54 (2016), no. 5, pp.321-330

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Metallic Materials Vol. 54 (2016), no. 5, pp.321-330

Title: Magnesium underpotential deposition from nitrate melts and alloy formation with platinum substrate
Author: V. S. CVETKOVIĆ, J. N. JOVIĆEVIĆ, L. J. BJELICA

Abstract: This paper investigates magnesium underpotential deposition on platinum electrodes from magnesium nitrate-ammonium nitrate melts at temperatures ranging from 400 to 500 K. Electrochemical techniques used were linear sweep voltammetry and potential step. Electrode surfaces were studied by Scanning electron microscopy (SEM), Atomic force microscopy (AFM), Energy dispersive spectrometry (EDS), energy dispersive X-Ray spectroscopy (EDX) and X-Ray diffraction (XRD). In the underpotential range studied, it was found that magnesium underpotential deposition took part simultaneously with reduction processes of nitrate and nitrite. EDS and XRD measurements showed clear evidence of MgPt3, Mg3Pt alloys being formed.

Keywords: magnesium/platinum alloys, underpotential deposition, magnesium nitrate-ammonium nitrate melts, microscopy and microanalysis techniques
Published online: 12-Oct-2016
Year: 2016, Volume: 54, Issue: 5 Page From: 321, Page To: 330
doi:10.4149/km_2016_5_321


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