Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO2 Solutions and Their Role in TGSCC Mechanism

Y. Yagodzinskyy; Pertti Aaltonen; Hannu Hänninen

doi:10.1016/B978-044452224-5/50081-0

Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO₂ Solutions and Their Role in TGSCC Mechanism

Y. Yagodzinskyy
, Pertti Aaltonen
, Hannu Hänninen

VTT Technical Research Centre of Finland

Helsinki University of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

Abstract

Auto-oscillations of the electrochemical potential around its average value close to +100 mVSCE under galvanostatic polarization of pure copper in 0.3M NaNO₂ solution were studied in annealed state of copper and during slow strain rate tensile tests of cold-deformed copper. The oscillations occur in the potential range where the passivation current increases dramaticaly due to Cu⁺⁺ cation generation in the semi-coherent oxide film on the copper substrate. Parameters of the oscillations were measured depending on the polarization conditions. It was supposed that the observed oscillations represent a nonlinear relaxation process in the passive oxide film interacting with the metal substrate at the semi-coherent oxide/metal interface. Based on the idea that cation vacancy balance at the Cu₂O/Cu interface depends on the stresses induced in the metal substrate by the interface conditions, a model of the observed nonlinear phenomena was formulated.

Original language	English
Title of host publication	Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers
Subtitle of host publication	A Selection of Papers from the 9th International Symposium
Editors	Philippe Marcus, Vincent Maurice
Place of Publication	Oxford
Publisher	Elsevier
Pages	525-530
ISBN (Print)	978-0-444-52224-5
DOIs	https://doi.org/10.1016/B978-044452224-5/50081-0
Publication status	Published - 2006
MoE publication type	A4 Article in a conference publication
Event	9th International Symposium on the Passivation of Metals and Semiconductors and the Properties of Thin Oxide Layers, PASSIVITY-9 - Paris, France Duration: 27 Jun 2005 → 1 Jul 2005 Conference number: 9

Conference

Conference	9th International Symposium on the Passivation of Metals and Semiconductors and the Properties of Thin Oxide Layers, PASSIVITY-9
Abbreviated title	PASSIVITY-9
Country/Territory	France
City	Paris
Period	27/06/05 → 1/07/05

Keywords

copper
cuprus oxide
cation vacancy
galvanostic polarisation
electrochemical potential oscillation

Access to Document

10.1016/B978-044452224-5/50081-0

Cite this

Yagodzinskyy, Y., Aaltonen, P., & Hänninen, H. (2006). Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO₂ Solutions and Their Role in TGSCC Mechanism. In P. Marcus, & V. Maurice (Eds.), Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers: A Selection of Papers from the 9th International Symposium (pp. 525-530). Elsevier. https://doi.org/10.1016/B978-044452224-5/50081-0

Yagodzinskyy, Y. ; Aaltonen, Pertti ; Hänninen, Hannu. / Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO₂ Solutions and Their Role in TGSCC Mechanism. Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers: A Selection of Papers from the 9th International Symposium. editor / Philippe Marcus ; Vincent Maurice. Oxford : Elsevier, 2006. pp. 525-530

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title = "Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO2 Solutions and Their Role in TGSCC Mechanism",

abstract = "Auto-oscillations of the electrochemical potential around its average value close to +100 mVSCE under galvanostatic polarization of pure copper in 0.3M NaNO2 solution were studied in annealed state of copper and during slow strain rate tensile tests of cold-deformed copper. The oscillations occur in the potential range where the passivation current increases dramaticaly due to Cu++ cation generation in the semi-coherent oxide film on the copper substrate. Parameters of the oscillations were measured depending on the polarization conditions. It was supposed that the observed oscillations represent a nonlinear relaxation process in the passive oxide film interacting with the metal substrate at the semi-coherent oxide/metal interface. Based on the idea that cation vacancy balance at the Cu2O/Cu interface depends on the stresses induced in the metal substrate by the interface conditions, a model of the observed nonlinear phenomena was formulated.",

keywords = "copper, cuprus oxide, cation vacancy, galvanostic polarisation, electrochemical potential oscillation",

author = "Y. Yagodzinskyy and Pertti Aaltonen and Hannu H{\"a}nninen",

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note = "9th International Symposium on the Passivation of Metals and Semiconductors and the Properties of Thin Oxide Layers, PASSIVITY-9, PASSIVITY-9 ; Conference date: 27-06-2005 Through 01-07-2005",

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Yagodzinskyy, Y, Aaltonen, P & Hänninen, H 2006, Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO₂ Solutions and Their Role in TGSCC Mechanism. in P Marcus & V Maurice (eds), Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers: A Selection of Papers from the 9th International Symposium. Elsevier, Oxford, pp. 525-530, 9th International Symposium on the Passivation of Metals and Semiconductors and the Properties of Thin Oxide Layers, PASSIVITY-9, Paris, France, 27/06/05. https://doi.org/10.1016/B978-044452224-5/50081-0

Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO₂ Solutions and Their Role in TGSCC Mechanism. / Yagodzinskyy, Y.; Aaltonen, Pertti; Hänninen, Hannu.
Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers: A Selection of Papers from the 9th International Symposium. ed. / Philippe Marcus; Vincent Maurice. Oxford: Elsevier, 2006. p. 525-530.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO2 Solutions and Their Role in TGSCC Mechanism

AU - Yagodzinskyy, Y.

AU - Aaltonen, Pertti

AU - Hänninen, Hannu

N1 - Conference code: 9

PY - 2006

Y1 - 2006

N2 - Auto-oscillations of the electrochemical potential around its average value close to +100 mVSCE under galvanostatic polarization of pure copper in 0.3M NaNO2 solution were studied in annealed state of copper and during slow strain rate tensile tests of cold-deformed copper. The oscillations occur in the potential range where the passivation current increases dramaticaly due to Cu++ cation generation in the semi-coherent oxide film on the copper substrate. Parameters of the oscillations were measured depending on the polarization conditions. It was supposed that the observed oscillations represent a nonlinear relaxation process in the passive oxide film interacting with the metal substrate at the semi-coherent oxide/metal interface. Based on the idea that cation vacancy balance at the Cu2O/Cu interface depends on the stresses induced in the metal substrate by the interface conditions, a model of the observed nonlinear phenomena was formulated.

AB - Auto-oscillations of the electrochemical potential around its average value close to +100 mVSCE under galvanostatic polarization of pure copper in 0.3M NaNO2 solution were studied in annealed state of copper and during slow strain rate tensile tests of cold-deformed copper. The oscillations occur in the potential range where the passivation current increases dramaticaly due to Cu++ cation generation in the semi-coherent oxide film on the copper substrate. Parameters of the oscillations were measured depending on the polarization conditions. It was supposed that the observed oscillations represent a nonlinear relaxation process in the passive oxide film interacting with the metal substrate at the semi-coherent oxide/metal interface. Based on the idea that cation vacancy balance at the Cu2O/Cu interface depends on the stresses induced in the metal substrate by the interface conditions, a model of the observed nonlinear phenomena was formulated.

KW - copper

KW - cuprus oxide

KW - cation vacancy

KW - galvanostic polarisation

KW - electrochemical potential oscillation

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DO - 10.1016/B978-044452224-5/50081-0

M3 - Conference article in proceedings

SN - 978-0-444-52224-5

SP - 525

EP - 530

BT - Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers

A2 - Marcus, Philippe

A2 - Maurice, Vincent

PB - Elsevier

CY - Oxford

T2 - 9th International Symposium on the Passivation of Metals and Semiconductors and the Properties of Thin Oxide Layers, PASSIVITY-9

Y2 - 27 June 2005 through 1 July 2005

ER -

Yagodzinskyy Y, Aaltonen P, Hänninen H. Electrochemical Potential Oscillations during Galvanostatic Passivation of Copper in NaNO₂ Solutions and Their Role in TGSCC Mechanism. In Marcus P, Maurice V, editors, Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers: A Selection of Papers from the 9th International Symposium. Oxford: Elsevier. 2006. p. 525-530 doi: 10.1016/B978-044452224-5/50081-0