Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes

Martin Bojinov, Anouk Galtayries, Petri Kinnunen, Alexandre Machet, Philippe Marcus

Research output: Contribution to journalArticleScientificpeer-review

43 Citations (Scopus)

Abstract

The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15% and Ni-20%Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3
Original languageEnglish
Pages (from-to)7475-7483
JournalElectrochimica Acta
Volume52
Issue number26
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

Film growth
Nickel
Electrolytes
Oxide films
Water
Temperature
Current density
X ray photoelectron spectroscopy
Kinetics

Keywords

  • nickel-based alloys
  • Oxide film growth
  • High-temperature water
  • Kinetic model

Cite this

Bojinov, Martin ; Galtayries, Anouk ; Kinnunen, Petri ; Machet, Alexandre ; Marcus, Philippe. / Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes. In: Electrochimica Acta. 2007 ; Vol. 52, No. 26. pp. 7475-7483.
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abstract = "The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15{\%} and Ni-20{\%}Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3",
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Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes. / Bojinov, Martin; Galtayries, Anouk; Kinnunen, Petri; Machet, Alexandre; Marcus, Philippe.

In: Electrochimica Acta, Vol. 52, No. 26, 2007, p. 7475-7483.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes

AU - Bojinov, Martin

AU - Galtayries, Anouk

AU - Kinnunen, Petri

AU - Machet, Alexandre

AU - Marcus, Philippe

N1 - Project code: 3437

PY - 2007

Y1 - 2007

N2 - The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15% and Ni-20%Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3

AB - The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15% and Ni-20%Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3

KW - nickel-based alloys

KW - Oxide film growth

KW - High-temperature water

KW - Kinetic model

U2 - 10.1016/j.electacta.2007.06.002

DO - 10.1016/j.electacta.2007.06.002

M3 - Article

VL - 52

SP - 7475

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JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

IS - 26

ER -