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Implications of the kosmotrope/chaotrope nature of the anions on the breakdown of passivity of iron by halides

Trompette, Jean-Luc Implications of the kosmotrope/chaotrope nature of the anions on the breakdown of passivity of iron by halides. (2014) Corrosion Science, 82. 108-114. ISSN 0010-938X

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Official URL: https://doi.org/10.1016/j.corsci.2014.01.005

Abstract

The comparative aggressiveness of NaF and NaCl solutions on the breakdown of passivity of iron has been investigated once the passivating borate buffer solution has been removed. The results highlight the inhibitive action of borate anions towards the less aggressive kosmotrope fluorides. Without borates, the kinetics of attack by fluorides is slower as the prepassivation is longer, and it is considerably retarded when compared to the case with the chaotrope chlorides. The high positive viscosity B coefficient value of borate anion argues in favor of its use as an inhibitor or as an efficient electrolyte for anodization baths.

Item Type:Article
HAL Id:hal-01917209
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Loetitia MOYA
Deposited On:09 Nov 2018 10:12

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