Corrosion inhibition of galvanized steel by <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msubsup><mrow><mi>M</mi> <mi>n</mi> <mi>O</mi></mrow> <mrow><mn>4</mn></mrow> <mo>-</mo></msubsup></mrow></math> ion as a soluble inhibitor in simulated fresh concrete environment: Fid-Bau Portal

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Corrosion inhibition of galvanized steel by ${M n O}_{4}^{-}$ ion as a soluble inhibitor in simulated fresh concrete environment

Wang, Yanqi / Kong, Gang

Highlights • Cr-free oxidant ${M n O}_{4}^{-}$ ion was introduced in simulated fresh concrete environments. • ${M n O}_{4}^{-}$ ion presented promising inhibition on rapid dissolution of galvanized steel. • ${M n O}_{4}^{-}$ ion almost completely suppressed hydrogen evolution of galvanized steel. • Inhibition mechanism of ${M n O}_{4}^{-}$ ion on corrosion of galvanized steel was discussed.

Abstract The problem of rapid metal dissolution and evolution of hydrogen (RDHE) of galvanized steel in fresh concrete have attracted attention recently. In this work, Cr-free oxidant ${M n O}_{4}^{-}$ ion was introduced in simulated fresh concrete environment to inhibit RDHE of galvanized steel (GS). Results showed that ${M n O}_{4}^{-}$ ion presented promising inhibition on both hydrogen evolution and anodic dissolution of GS. The presence of ${M n O}_{4}^{-}$ ion significantly increased the corrosion potential of GS, and also caused the formation of (Mn, Ca)-containing protective film at corroding interface. This gave ${M n O}_{4}^{-}$ ion high inhibition efficiency (>98%) on anodic dissolution and hydrogen evolution of GS.

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Corrosion inhibition of galvanized steel by ${M n O}_{4}^{-}$ ion as a soluble inhibitor in simulated fresh concrete environment

Wang, Yanqi / Kong, Gang

Highlights • Cr-free oxidant ${M n O}_{4}^{-}$ ion was introduced in simulated fresh concrete environments. • ${M n O}_{4}^{-}$ ion presented promising inhibition on rapid dissolution of galvanized steel. • ${M n O}_{4}^{-}$ ion almost completely suppressed hydrogen evolution of galvanized steel. • Inhibition mechanism of ${M n O}_{4}^{-}$ ion on corrosion of galvanized steel was discussed.

Abstract The problem of rapid metal dissolution and evolution of hydrogen (RDHE) of galvanized steel in fresh concrete have attracted attention recently. In this work, Cr-free oxidant ${M n O}_{4}^{-}$ ion was introduced in simulated fresh concrete environment to inhibit RDHE of galvanized steel (GS). Results showed that ${M n O}_{4}^{-}$ ion presented promising inhibition on both hydrogen evolution and anodic dissolution of GS. The presence of ${M n O}_{4}^{-}$ ion significantly increased the corrosion potential of GS, and also caused the formation of (Mn, Ca)-containing protective film at corroding interface. This gave ${M n O}_{4}^{-}$ ion high inhibition efficiency (>98%) on anodic dissolution and hydrogen evolution of GS.

Corrosion inhibition of galvanized steel by ${M n O}_{4}^{-}$ ion as a soluble inhibitor in simulated fresh concrete environment

Wang, Yanqi / Kong, Gang

Highlights • Cr-free oxidant ${M n O}_{4}^{-}$ ion was introduced in simulated fresh concrete environments. • ${M n O}_{4}^{-}$ ion presented promising inhibition on rapid dissolution of galvanized steel. • ${M n O}_{4}^{-}$ ion almost completely suppressed hydrogen evolution of galvanized steel. • Inhibition mechanism of ${M n O}_{4}^{-}$ ion on corrosion of galvanized steel was discussed.

Abstract The problem of rapid metal dissolution and evolution of hydrogen (RDHE) of galvanized steel in fresh concrete have attracted attention recently. In this work, Cr-free oxidant ${M n O}_{4}^{-}$ ion was introduced in simulated fresh concrete environment to inhibit RDHE of galvanized steel (GS). Results showed that ${M n O}_{4}^{-}$ ion presented promising inhibition on both hydrogen evolution and anodic dissolution of GS. The presence of ${M n O}_{4}^{-}$ ion significantly increased the corrosion potential of GS, and also caused the formation of (Mn, Ca)-containing protective film at corroding interface. This gave ${M n O}_{4}^{-}$ ion high inhibition efficiency (>98%) on anodic dissolution and hydrogen evolution of GS.

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Titel:

Corrosion inhibition of galvanized steel by ${M n O}_{4}^{-}$ ion as a soluble inhibitor in simulated fresh concrete environment

Beteiligte:

Wang, Yanqi (Autor:in) / Kong, Gang (Autor:in)

Erschienen in:

Construction and Building Materials ; 257

Erscheinungsdatum:

11.05.2020

ISSN:

DOI:

https://doi.org/10.1016/j.conbuildmat.2020.119532

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Zinc , Steel , Alkaline corrosion , Concrete , Inhibitor

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