Corrosion film breakdown of galvanized steel in sulphate-chloride solutions

Victor Padilla; Akram Alfantazi

doi:10.1016/j.conbuildmat.2014.05.053

Corrosion film breakdown of galvanized steel in sulphate-chloride solutions

Victor Padilla, Akram Alfantazi

Chemical and Petroleum Engineering

The University of British Columbia

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

This work presents the corrosion performance of galvanized steel in sulphate-chloride solutions. The surface area changes, film breakdown susceptibility, and protectiveness of the corrosion products were studied using Potentiodynamic Polarization, Cyclic Voltammetry, Cyclic Polarization, and Electrochemical Impedance Spectroscopy. Samples immersed in MgCl₂ solutions had the lowest corrosion rate, while samples immersed in the NaCl solutions showed the worst performance. The longer expected durability of samples immersed in MgCl₂ was attributed to the lower corrosion kinetics, and a greater surface coverage by the corrosion product. However, results show that the formed corrosion layer is non-protective under any of the studied conditions.

Original language	British English
Pages (from-to)	447-457
Number of pages	11
Journal	Construction and Building Materials
Volume	66
DOIs	https://doi.org/10.1016/j.conbuildmat.2014.05.053
State	Published - 15 Sep 2014

Keywords

Chlorides
Corrosion
Cyclic Polarization
Cyclic Voltammetry
Electrochemical Impedance Spectroscopy
Film breakdown
Galvanized steel
Sulphates

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10.1016/j.conbuildmat.2014.05.053

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title = "Corrosion film breakdown of galvanized steel in sulphate-chloride solutions",

abstract = "This work presents the corrosion performance of galvanized steel in sulphate-chloride solutions. The surface area changes, film breakdown susceptibility, and protectiveness of the corrosion products were studied using Potentiodynamic Polarization, Cyclic Voltammetry, Cyclic Polarization, and Electrochemical Impedance Spectroscopy. Samples immersed in MgCl2 solutions had the lowest corrosion rate, while samples immersed in the NaCl solutions showed the worst performance. The longer expected durability of samples immersed in MgCl2 was attributed to the lower corrosion kinetics, and a greater surface coverage by the corrosion product. However, results show that the formed corrosion layer is non-protective under any of the studied conditions.",

keywords = "Chlorides, Corrosion, Cyclic Polarization, Cyclic Voltammetry, Electrochemical Impedance Spectroscopy, Film breakdown, Galvanized steel, Sulphates",

author = "Victor Padilla and Akram Alfantazi",

note = "Funding Information: The authors would like to express their gratitude to the British Columbia Ministry of Transportation and Infrastructure and Atlantic Industries Limited for the financial support provided for this work.",

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TY - JOUR

T1 - Corrosion film breakdown of galvanized steel in sulphate-chloride solutions

AU - Padilla, Victor

AU - Alfantazi, Akram

N1 - Funding Information: The authors would like to express their gratitude to the British Columbia Ministry of Transportation and Infrastructure and Atlantic Industries Limited for the financial support provided for this work.

PY - 2014/9/15

Y1 - 2014/9/15

N2 - This work presents the corrosion performance of galvanized steel in sulphate-chloride solutions. The surface area changes, film breakdown susceptibility, and protectiveness of the corrosion products were studied using Potentiodynamic Polarization, Cyclic Voltammetry, Cyclic Polarization, and Electrochemical Impedance Spectroscopy. Samples immersed in MgCl2 solutions had the lowest corrosion rate, while samples immersed in the NaCl solutions showed the worst performance. The longer expected durability of samples immersed in MgCl2 was attributed to the lower corrosion kinetics, and a greater surface coverage by the corrosion product. However, results show that the formed corrosion layer is non-protective under any of the studied conditions.

AB - This work presents the corrosion performance of galvanized steel in sulphate-chloride solutions. The surface area changes, film breakdown susceptibility, and protectiveness of the corrosion products were studied using Potentiodynamic Polarization, Cyclic Voltammetry, Cyclic Polarization, and Electrochemical Impedance Spectroscopy. Samples immersed in MgCl2 solutions had the lowest corrosion rate, while samples immersed in the NaCl solutions showed the worst performance. The longer expected durability of samples immersed in MgCl2 was attributed to the lower corrosion kinetics, and a greater surface coverage by the corrosion product. However, results show that the formed corrosion layer is non-protective under any of the studied conditions.

KW - Chlorides

KW - Corrosion

KW - Cyclic Polarization

KW - Cyclic Voltammetry

KW - Electrochemical Impedance Spectroscopy

KW - Film breakdown

KW - Galvanized steel

KW - Sulphates

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U2 - 10.1016/j.conbuildmat.2014.05.053

DO - 10.1016/j.conbuildmat.2014.05.053

M3 - Article

AN - SCOPUS:84903173596

SN - 0950-0618

VL - 66

SP - 447

EP - 457

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Corrosion film breakdown of galvanized steel in sulphate-chloride solutions

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Keywords

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