Kinetics of passive film growth on Alloy 800 in the presence of hydrogen peroxide

Tirdad Nickchi; Akram Alfantazi

doi:10.1016/j.electacta.2011.10.029

Kinetics of passive film growth on Alloy 800 in the presence of hydrogen peroxide

Tirdad Nickchi, Akram Alfantazi

Chemical and Petroleum Engineering

The University of British Columbia

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

23 Scopus citations

Abstract

Alloy 800 is one of the potential steel alloys to be used in the cooling system of the next generation of power plants. The corrosion behavior of the alloy is dominated by its passive film. The kinetics of passive film growth is the subject of this study. Long-term open circuit potential tests, along with polarization resistance and electrochemical impedance spectroscopy tests provide data on evolution of passive state on the metal surface. It shows that the metal would possibly be in the active region after 24 h of immersion in the absence of hydrogen peroxide while the alloy undergoes the active-passive transition in solution containing 10^-4 M hydrogen peroxide. Polarization resistance data showed that the passive film continues thickening after OCP stabilization in the case of presence of H₂O₂. EIS data generally confirms the overall R_p behavior. The time-dependent EIS models were used for more in-depth evaluation of passive film kinetics.

Original language	British English
Pages (from-to)	743-749
Number of pages	7
Journal	Electrochimica Acta
Volume	58
Issue number	1
DOIs	https://doi.org/10.1016/j.electacta.2011.10.029
State	Published - 30 Dec 2011

Keywords

Alloy 800
EIS
Hydrogen peroxide
Passive film

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10.1016/j.electacta.2011.10.029

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title = "Kinetics of passive film growth on Alloy 800 in the presence of hydrogen peroxide",

abstract = "Alloy 800 is one of the potential steel alloys to be used in the cooling system of the next generation of power plants. The corrosion behavior of the alloy is dominated by its passive film. The kinetics of passive film growth is the subject of this study. Long-term open circuit potential tests, along with polarization resistance and electrochemical impedance spectroscopy tests provide data on evolution of passive state on the metal surface. It shows that the metal would possibly be in the active region after 24 h of immersion in the absence of hydrogen peroxide while the alloy undergoes the active-passive transition in solution containing 10-4 M hydrogen peroxide. Polarization resistance data showed that the passive film continues thickening after OCP stabilization in the case of presence of H2O2. EIS data generally confirms the overall Rp behavior. The time-dependent EIS models were used for more in-depth evaluation of passive film kinetics.",

keywords = "Alloy 800, EIS, Hydrogen peroxide, Passive film",

author = "Tirdad Nickchi and Akram Alfantazi",

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AU - Nickchi, Tirdad

AU - Alfantazi, Akram

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Y1 - 2011/12/30

N2 - Alloy 800 is one of the potential steel alloys to be used in the cooling system of the next generation of power plants. The corrosion behavior of the alloy is dominated by its passive film. The kinetics of passive film growth is the subject of this study. Long-term open circuit potential tests, along with polarization resistance and electrochemical impedance spectroscopy tests provide data on evolution of passive state on the metal surface. It shows that the metal would possibly be in the active region after 24 h of immersion in the absence of hydrogen peroxide while the alloy undergoes the active-passive transition in solution containing 10-4 M hydrogen peroxide. Polarization resistance data showed that the passive film continues thickening after OCP stabilization in the case of presence of H2O2. EIS data generally confirms the overall Rp behavior. The time-dependent EIS models were used for more in-depth evaluation of passive film kinetics.

AB - Alloy 800 is one of the potential steel alloys to be used in the cooling system of the next generation of power plants. The corrosion behavior of the alloy is dominated by its passive film. The kinetics of passive film growth is the subject of this study. Long-term open circuit potential tests, along with polarization resistance and electrochemical impedance spectroscopy tests provide data on evolution of passive state on the metal surface. It shows that the metal would possibly be in the active region after 24 h of immersion in the absence of hydrogen peroxide while the alloy undergoes the active-passive transition in solution containing 10-4 M hydrogen peroxide. Polarization resistance data showed that the passive film continues thickening after OCP stabilization in the case of presence of H2O2. EIS data generally confirms the overall Rp behavior. The time-dependent EIS models were used for more in-depth evaluation of passive film kinetics.

KW - Alloy 800

KW - EIS

KW - Hydrogen peroxide

KW - Passive film

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DO - 10.1016/j.electacta.2011.10.029

M3 - Article

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EP - 749

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 1

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Kinetics of passive film growth on Alloy 800 in the presence of hydrogen peroxide

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Keywords

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