Applications of scanning electrochemical microscopy (SECM) for local characterization of AZ31 surface during corrosion in a buffered media

Jamali,SS, Moulton,SE, Tallman,DE, Forsyth,M, Weber,J and Wallace,GG 2014, Applications of scanning electrochemical microscopy (SECM) for local characterization of AZ31 surface during corrosion in a buffered media, Corrosion science, vol. 86, pp. 93-100, doi: 10.1016/j.corsci.2014.04.035.

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Title Applications of scanning electrochemical microscopy (SECM) for local characterization of AZ31 surface during corrosion in a buffered media
Author(s) Jamali,SS
Moulton,SE
Tallman,DE
Forsyth,MORCID iD for Forsyth,M orcid.org/0000-0002-4273-8105
Weber,J
Wallace,GG
Journal name Corrosion science
Volume number 86
Start page 93
End page 100
Publisher Elsevier
Place of publication London, England
Publication date 2014-09
ISSN 0010-938X
Keyword(s) A. Magnesium
B. Electrochemical calculation
C. Hydrogen absorption
C. Interfaces
C. Passive films
Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
Magnesium
Electrochemical calculation
Passive films
Hydrogen absorption
Interfaces
AZ91 MAGNESIUM ALLOY
AC-SECM
IMPEDANCE SPECTROSCOPY
SULFATE-SOLUTIONS
PURE MAGNESIUM
KELVIN PROBE
COATED STEEL
IN-VIVO
BEHAVIOR
VISUALIZATION
Summary Different modes of scanning electrochemical mapping (SECM) such as surface generation/tip collection (SG/TC), amperometry, AC-SECM and potentiometry were employed to characterize the active/passive domains, hydrogen gas (H2) evolution and local pH on a corroding surface of AZ31 in simulated biological fluid (SBF). It was found that the main domains of H2 evolution are associated with lower insulating properties of the surface as well as higher local pH. The near surface pH was found to be highly alkaline indicating that, even in a buffered solution such as SBF, the local pH on a corroding AZ31 surface can be significantly different to the bulk pH. © 2014 Elsevier Ltd.
Language eng
DOI 10.1016/j.corsci.2014.04.035
Field of Research 091207 Metals and Alloy Materials
030604 Electrochemistry
Socio Economic Objective 870302 Metals (e.g. Composites
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID CE0561616
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30068259

Document type: Journal Article
Collections: Institute for Frontier Materials
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