Oxidation model for construction materials in supercritical water: Estimation of kinetic and transport parameters

Sami Penttilä, Iva Betova, Martin Bojinov, Petri Kinnunen, Aki Toivonen

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.
Original languageEnglish
Pages (from-to)36-46
JournalCorrosion Science
Volume100
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Oxidation
Kinetics
Water
Stainless Steel
Nickel
Kinetic parameters
Oxides
Cations
Stainless steel
Positive ions

Keywords

  • A. Stainless steel
  • B. Modeling studies
  • C. High-temperature corrosion

Cite this

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title = "Oxidation model for construction materials in supercritical water: Estimation of kinetic and transport parameters",
abstract = "An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.",
keywords = "A. Stainless steel, B. Modeling studies, C. High-temperature corrosion",
author = "Sami Penttil{\"a} and Iva Betova and Martin Bojinov and Petri Kinnunen and Aki Toivonen",
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language = "English",
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journal = "Corrosion Science",
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Oxidation model for construction materials in supercritical water : Estimation of kinetic and transport parameters. / Penttilä, Sami; Betova, Iva; Bojinov, Martin; Kinnunen, Petri; Toivonen, Aki.

In: Corrosion Science, Vol. 100, 2015, p. 36-46.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Oxidation model for construction materials in supercritical water

T2 - Estimation of kinetic and transport parameters

AU - Penttilä, Sami

AU - Betova, Iva

AU - Bojinov, Martin

AU - Kinnunen, Petri

AU - Toivonen, Aki

PY - 2015

Y1 - 2015

N2 - An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.

AB - An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.

KW - A. Stainless steel

KW - B. Modeling studies

KW - C. High-temperature corrosion

U2 - 10.1016/j.corsci.2015.06.033

DO - 10.1016/j.corsci.2015.06.033

M3 - Article

VL - 100

SP - 36

EP - 46

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -