The effect of strontium and chromate ions on the inhibition of zinc

I. M. Baghni; S. B. Lyon; Baofeng Ding

doi:10.1016/S0257-8972(03)01316-1

The effect of strontium and chromate ions on the inhibition of zinc

I. M. Baghni, S. B. Lyon, Baofeng Ding

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

Abstract

The corrosion and inhibition of zinc in artificial acid rain solution (pH 4.5) at a low strontium chromate concentration has been evaluated using electrochemistry, solution analysis and XPS. These techniques have been used to estimate inhibitor efficiency and to determine a possible inhibition mechanism. The results show that strontium chromate at low concentration inhibited significantly more of the cathodic corrosion process, by reduction of Cr6+ to a solid species containing Cr3+. The surface film contained a mixture of oxidised zinc and chromium, probably in the form of basic zinc carbonate (hydrozincite) and hydrated chromia. Importantly strontium ions were found to play no significant role in the inhibition process. © 2003 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	194-198
Number of pages	4
Journal	Surface and Coatings Technology
Volume	185
Issue number	2-3
DOIs	https://doi.org/10.1016/S0257-8972(03)01316-1
Publication status	Published - 22 Jul 2004

Keywords

Acid rain
Chromate inhibitor pigments
Impedance
Inhibition
Zinc

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10.1016/S0257-8972(03)01316-1

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title = "The effect of strontium and chromate ions on the inhibition of zinc",

abstract = "The corrosion and inhibition of zinc in artificial acid rain solution (pH 4.5) at a low strontium chromate concentration has been evaluated using electrochemistry, solution analysis and XPS. These techniques have been used to estimate inhibitor efficiency and to determine a possible inhibition mechanism. The results show that strontium chromate at low concentration inhibited significantly more of the cathodic corrosion process, by reduction of Cr6+ to a solid species containing Cr3+. The surface film contained a mixture of oxidised zinc and chromium, probably in the form of basic zinc carbonate (hydrozincite) and hydrated chromia. Importantly strontium ions were found to play no significant role in the inhibition process. {\textcopyright} 2003 Elsevier B.V. All rights reserved.",

keywords = "Acid rain, Chromate inhibitor pigments, Impedance, Inhibition, Zinc",

author = "Baghni, {I. M.} and Lyon, {S. B.} and Baofeng Ding",

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TY - JOUR

T1 - The effect of strontium and chromate ions on the inhibition of zinc

AU - Baghni, I. M.

AU - Lyon, S. B.

AU - Ding, Baofeng

PY - 2004/7/22

Y1 - 2004/7/22

N2 - The corrosion and inhibition of zinc in artificial acid rain solution (pH 4.5) at a low strontium chromate concentration has been evaluated using electrochemistry, solution analysis and XPS. These techniques have been used to estimate inhibitor efficiency and to determine a possible inhibition mechanism. The results show that strontium chromate at low concentration inhibited significantly more of the cathodic corrosion process, by reduction of Cr6+ to a solid species containing Cr3+. The surface film contained a mixture of oxidised zinc and chromium, probably in the form of basic zinc carbonate (hydrozincite) and hydrated chromia. Importantly strontium ions were found to play no significant role in the inhibition process. © 2003 Elsevier B.V. All rights reserved.

AB - The corrosion and inhibition of zinc in artificial acid rain solution (pH 4.5) at a low strontium chromate concentration has been evaluated using electrochemistry, solution analysis and XPS. These techniques have been used to estimate inhibitor efficiency and to determine a possible inhibition mechanism. The results show that strontium chromate at low concentration inhibited significantly more of the cathodic corrosion process, by reduction of Cr6+ to a solid species containing Cr3+. The surface film contained a mixture of oxidised zinc and chromium, probably in the form of basic zinc carbonate (hydrozincite) and hydrated chromia. Importantly strontium ions were found to play no significant role in the inhibition process. © 2003 Elsevier B.V. All rights reserved.

KW - Acid rain

KW - Chromate inhibitor pigments

KW - Impedance

KW - Inhibition

KW - Zinc

U2 - 10.1016/S0257-8972(03)01316-1

DO - 10.1016/S0257-8972(03)01316-1

M3 - Article

SN - 0257-8972

VL - 185

SP - 194

EP - 198

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 2-3

ER -

The effect of strontium and chromate ions on the inhibition of zinc

Abstract

Keywords

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