Observations of the galvanostatic dissolution of pure magnesium

The dissolution of pure magnesium in 0.1M NaCl under galvanostatic polarisation is reconciled in real time via video imaging of specially designed working electrodes that permit geometrically uniform dissolution. The dissolution stoichiometry was observed to be centred about n=2, however this varies...

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Bibliographic Details
Published in:Corrosion science 2012-12, Vol.65, p.5-9
Main Authors: Kirkland, N.T., Williams, G., Birbilis, N.
Format: Article
Language:English
Subjects:
A. Magnesium
Applied sciences
B. Galvanostatic
C. Anodic dissolution
Corrosion
Corrosion environments
Density
Dissolution
Electrodes
Electrolytes
Exact sciences and technology
Magnesium
Metals. Metallurgy
Real time
Stoichiometry
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Summary:The dissolution of pure magnesium in 0.1M NaCl under galvanostatic polarisation is reconciled in real time via video imaging of specially designed working electrodes that permit geometrically uniform dissolution. The dissolution stoichiometry was observed to be centred about n=2, however this varies according to the magnitude of the applied current. Applied currents densities 1mA/cm2 display n⩾2, the latter related to a significant increase in electrolyte pH during testing.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2012.08.029