Response of surface mechanical properties to electrochemical dissolution determined by in situ nanoindentation technique

An in situ nanoindentation technique was used to study the mechanical property degradation in the surface layer induced by electrochemical dissolution. The load–depth curves of indentation were measured using pure iron immersed in electrolyte. The experimental result showed that the anodic currents...

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Bibliographic Details
Published inElectrochemistry communications Vol. 8; no. 7; pp. 1092 - 1098
Main Authors Guo, H.X., Lu, B.T., Luo, J.L.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.07.2006
Amsterdam Elsevier Science
New York, NY
Subjects
Applied sciences
Corrosion
Corrosion environments
Electrochemical dissolution
Exact sciences and technology
Hardness
In situ nanoindentation
Iron
Metals. Metallurgy
Modulus
In situ nanoindentation
Electrochemical dissolution
Iron
Hardness
Modulus
Atomic force microscopy
Electrochemical corrosion
Nanoindentation
Mechanical properties
Transition metal
Surface structure
Surface hardness
Electrodissolution
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Summary:An in situ nanoindentation technique was used to study the mechanical property degradation in the surface layer induced by electrochemical dissolution. The load–depth curves of indentation were measured using pure iron immersed in electrolyte. The experimental result showed that the anodic currents reduced both hardness and elastic modulus of the material surface layer, and the degradation effect declined with increasing distance from the surface. The electrochemical dissolution-induced degradation was explained by the generation of non-equilibrium vacancies in the metal surface layer during dissolution process.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2006.04.020