Inhibition of copper corrosion in cooling seawater under flowing conditions by novel pyrophosphate

M. A. Deyab; R. Essehli; B. El Bali

doi:10.1039/c5ra08119j

Inhibition of copper corrosion in cooling seawater under flowing conditions by novel pyrophosphate

M. A. Deyab, R. Essehli, B. El Bali

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74 Scopus citations

Abstract

The inhibition of copper corrosion in cooling seawater by novel pyrophosphate SrNiP₂O₇ (SNP) was investigated under flowing conditions using mass-loss and electrochemical methods. The surface morphology was characterized by SEM coupled with EDX spectra. Comparable results show that SNP acts as a mixed-type inhibitor with predominantly cathodic effectiveness, suppressing the corrosive process by physical adsorption on the copper surface. The highest inhibition efficiency obtained from mass-loss, polarization and EIS measurements are 92.7%, 94.8% and 97.1%, respectively, at 120 mg L^-1 of SNP. The influence of increasing temperature on SNP inhibitor efficiency has been studied, and the activation energy has been calculated. Surface morphology observations evidenced the formation of a protective SNP film over the metal surface.

Original language	English
Pages (from-to)	64326-64334
Number of pages	9
Journal	RSC Advances
Volume	5
Issue number	79
DOIs	https://doi.org/10.1039/c5ra08119j
State	Published - 2015
Externally published	Yes

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title = "Inhibition of copper corrosion in cooling seawater under flowing conditions by novel pyrophosphate",

abstract = "The inhibition of copper corrosion in cooling seawater by novel pyrophosphate SrNiP2O7 (SNP) was investigated under flowing conditions using mass-loss and electrochemical methods. The surface morphology was characterized by SEM coupled with EDX spectra. Comparable results show that SNP acts as a mixed-type inhibitor with predominantly cathodic effectiveness, suppressing the corrosive process by physical adsorption on the copper surface. The highest inhibition efficiency obtained from mass-loss, polarization and EIS measurements are 92.7%, 94.8% and 97.1%, respectively, at 120 mg L-1 of SNP. The influence of increasing temperature on SNP inhibitor efficiency has been studied, and the activation energy has been calculated. Surface morphology observations evidenced the formation of a protective SNP film over the metal surface.",

author = "Deyab, {M. A.} and R. Essehli and {El Bali}, B.",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

doi = "10.1039/c5ra08119j",

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volume = "5",

pages = "64326--64334",

journal = "RSC Advances",

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T1 - Inhibition of copper corrosion in cooling seawater under flowing conditions by novel pyrophosphate

AU - Deyab, M. A.

AU - Essehli, R.

AU - El Bali, B.

N1 - Publisher Copyright: © The Royal Society of Chemistry 2015.

PY - 2015

Y1 - 2015

N2 - The inhibition of copper corrosion in cooling seawater by novel pyrophosphate SrNiP2O7 (SNP) was investigated under flowing conditions using mass-loss and electrochemical methods. The surface morphology was characterized by SEM coupled with EDX spectra. Comparable results show that SNP acts as a mixed-type inhibitor with predominantly cathodic effectiveness, suppressing the corrosive process by physical adsorption on the copper surface. The highest inhibition efficiency obtained from mass-loss, polarization and EIS measurements are 92.7%, 94.8% and 97.1%, respectively, at 120 mg L-1 of SNP. The influence of increasing temperature on SNP inhibitor efficiency has been studied, and the activation energy has been calculated. Surface morphology observations evidenced the formation of a protective SNP film over the metal surface.

AB - The inhibition of copper corrosion in cooling seawater by novel pyrophosphate SrNiP2O7 (SNP) was investigated under flowing conditions using mass-loss and electrochemical methods. The surface morphology was characterized by SEM coupled with EDX spectra. Comparable results show that SNP acts as a mixed-type inhibitor with predominantly cathodic effectiveness, suppressing the corrosive process by physical adsorption on the copper surface. The highest inhibition efficiency obtained from mass-loss, polarization and EIS measurements are 92.7%, 94.8% and 97.1%, respectively, at 120 mg L-1 of SNP. The influence of increasing temperature on SNP inhibitor efficiency has been studied, and the activation energy has been calculated. Surface morphology observations evidenced the formation of a protective SNP film over the metal surface.

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DO - 10.1039/c5ra08119j

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VL - 5

SP - 64326

EP - 64334

JO - RSC Advances

JF - RSC Advances

IS - 79

ER -

Inhibition of copper corrosion in cooling seawater under flowing conditions by novel pyrophosphate

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