Mg-alloys in water – hydrophilic ionic liquid mixtures: Is there a negative difference effect?

نویسندگان

چکیده

Commercial purity Mg and Mg-alloy AZ61 were exposed at open circuit potential under anodic polarization in two ionic liquids containing 10 wt% of water, formed by acetate anion methylpyrrolidinium cation, substituted with either aliphatic (ILA) or etheric (ILE) chain. Hydrogen evolution strongly increased (negative difference effect, NDE) ILA, but not ILE. In both electrolytes Mg(OH)2-film on AZ61. The NDE suppression did correlate neither the presence carboxylate, nor absence Mg(OH)2, indicating strong differences between magnesium-water interactions IL-water mixtures inorganic aqueous solutions.

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ژورنال

عنوان ژورنال: Corrosion Science

سال: 2022

ISSN: ['1879-0496', '0010-938X']

DOI: https://doi.org/10.1016/j.corsci.2022.110178