MoO42- as a soluble inhibitor for Zn in neutral and alkaline solutions. - Institut de Chimie de Clermont-Ferrand Accéder directement au contenu
Article Dans Une Revue Corrosion Science Année : 2015

MoO42- as a soluble inhibitor for Zn in neutral and alkaline solutions.

Résumé

The inhibitive action of soluble Na2MoO4 on the spontaneous reactivity of hot dip galvanized steel in 0.5 M NaCl was studied at pH 4–13 by a direct measurement of Zn dissolution rate in the flowing electrolyte and postmortem surface analysis. The stability and the composition of Mo-rich films depended on the solution pH and flow conditions. The inhibition efficiency of soluble Mo(VI) correlated with the composition of the films: Mo(V)-rich films were immediately formed under uniform flow at pH 6–12, and the inhibition efficiency of Mo(VI) in these conditions (>92%) was comparable with the efficiency of Cr(VI).

Domaines

Chimie
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Dates et versions

hal-01208520 , version 1 (02-10-2015)

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Citer

V. Shkirskiy, P. Keil, H. Hintze-Bruening, F. Leroux, T. Stimpfling, et al.. MoO42- as a soluble inhibitor for Zn in neutral and alkaline solutions.. Corrosion Science, 2015, 99, pp.31-41. ⟨10.1016/j.corsci.2015.05.005⟩. ⟨hal-01208520⟩
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