Effect of water chemistry on the oxide film on Alloy 690 during simulated hot functional testing of a pressurised water reactor

I. Betova, M. Bojinov (Corresponding Author), V. Karastoyanov, Petri Kinnunen, Timo Saario

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)

Abstract

Electrochemical impedance spectroscopic measurements to follow the oxidation of Alloy 690 in high-temperature water environments simulating hot functional test (HFT) chemistries are presented and discussed. The thickness and in-depth composition of the formed oxides is estimated by X-ray photoelectron spectroscopy. Kinetic and transport parameters of the oxidation process are estimated by quantitative comparison of the results with the mixed-conduction model for oxide films. Based on the influence of LiOH and H3BO3 concentrations on the parameter values, conclusions for the relationship between HFT water chemistry and the electrical and electrochemical properties of the passive layer on reactor coolant circuit surfaces are drawn.
Original languageEnglish
Pages (from-to)20-32
Number of pages12
JournalCorrosion Science
Volume58
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Pressurized water reactors
Oxide films
Oxidation
Water
Testing
Electrochemical properties
Coolants
Oxides
Electric properties
X ray photoelectron spectroscopy
Kinetics
Networks (circuits)
Chemical analysis
Temperature

Keywords

  • Alloy
  • nickel
  • EIS
  • modelling studies
  • XPS
  • reactor conditions

Cite this

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title = "Effect of water chemistry on the oxide film on Alloy 690 during simulated hot functional testing of a pressurised water reactor",
abstract = "Electrochemical impedance spectroscopic measurements to follow the oxidation of Alloy 690 in high-temperature water environments simulating hot functional test (HFT) chemistries are presented and discussed. The thickness and in-depth composition of the formed oxides is estimated by X-ray photoelectron spectroscopy. Kinetic and transport parameters of the oxidation process are estimated by quantitative comparison of the results with the mixed-conduction model for oxide films. Based on the influence of LiOH and H3BO3 concentrations on the parameter values, conclusions for the relationship between HFT water chemistry and the electrical and electrochemical properties of the passive layer on reactor coolant circuit surfaces are drawn.",
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year = "2012",
doi = "10.1016/j.corsci.2012.01.002",
language = "English",
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pages = "20--32",
journal = "Corrosion Science",
issn = "0010-938X",
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Effect of water chemistry on the oxide film on Alloy 690 during simulated hot functional testing of a pressurised water reactor. / Betova, I.; Bojinov, M. (Corresponding Author); Karastoyanov, V.; Kinnunen, Petri; Saario, Timo.

In: Corrosion Science, Vol. 58, 2012, p. 20-32.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of water chemistry on the oxide film on Alloy 690 during simulated hot functional testing of a pressurised water reactor

AU - Betova, I.

AU - Bojinov, M.

AU - Karastoyanov, V.

AU - Kinnunen, Petri

AU - Saario, Timo

PY - 2012

Y1 - 2012

N2 - Electrochemical impedance spectroscopic measurements to follow the oxidation of Alloy 690 in high-temperature water environments simulating hot functional test (HFT) chemistries are presented and discussed. The thickness and in-depth composition of the formed oxides is estimated by X-ray photoelectron spectroscopy. Kinetic and transport parameters of the oxidation process are estimated by quantitative comparison of the results with the mixed-conduction model for oxide films. Based on the influence of LiOH and H3BO3 concentrations on the parameter values, conclusions for the relationship between HFT water chemistry and the electrical and electrochemical properties of the passive layer on reactor coolant circuit surfaces are drawn.

AB - Electrochemical impedance spectroscopic measurements to follow the oxidation of Alloy 690 in high-temperature water environments simulating hot functional test (HFT) chemistries are presented and discussed. The thickness and in-depth composition of the formed oxides is estimated by X-ray photoelectron spectroscopy. Kinetic and transport parameters of the oxidation process are estimated by quantitative comparison of the results with the mixed-conduction model for oxide films. Based on the influence of LiOH and H3BO3 concentrations on the parameter values, conclusions for the relationship between HFT water chemistry and the electrical and electrochemical properties of the passive layer on reactor coolant circuit surfaces are drawn.

KW - Alloy

KW - nickel

KW - EIS

KW - modelling studies

KW - XPS

KW - reactor conditions

U2 - 10.1016/j.corsci.2012.01.002

DO - 10.1016/j.corsci.2012.01.002

M3 - Article

VL - 58

SP - 20

EP - 32

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -