Understanding complex electrochemical impedance spectroscopy in corrosion systems using in-situ synchrotron radiation grazing incidence x-ray diffraction

Alam, Muhammad Tanzirul, Chan, Emilyn Wai Lyn, De Marco, Roland, Huang, Yanliang and Bailey, Stuart (2016) Understanding complex electrochemical impedance spectroscopy in corrosion systems using in-situ synchrotron radiation grazing incidence x-ray diffraction. Electroanalysis, . doi:10.1002/elan.201600137


Author Alam, Muhammad Tanzirul
Chan, Emilyn Wai Lyn
De Marco, Roland
Huang, Yanliang
Bailey, Stuart
Title Understanding complex electrochemical impedance spectroscopy in corrosion systems using in-situ synchrotron radiation grazing incidence x-ray diffraction
Formatted title
Understanding complex electrochemical impedance spectroscopy in corrosion systems using in-situ synchrotron radiation grazing incidence x-ray diffraction
Journal name Electroanalysis   Check publisher's open access policy
ISSN 1521-4109
Publication date 2016-05-17
Sub-type Article (original research)
DOI 10.1002/elan.201600137
Open Access Status Not Open Access
Total pages 6
Place of publication Weinheim, Germany
Publisher Wiley-VCH
Collection year 2017
Formatted abstract
The difficulty in interpreting electrochemical impedance spectroscopy (EIS) data has limited the potential of the method despite its utility as an electrochemical method for studies of electrode reactions and interfacial structures. Taking the test case of the carbon dioxide corrosion of carbon steel, in-situ synchrotron radiation grazing incidence X-ray diffraction (SR-GIXRD) has been demonstrated to be a powerful technique for validating and understanding the interfacial structures associated with complex EIS data. Carbon dioxide corrosion was found to occur in several steps, which may only be surmised by EIS, but the use of SR-GIXRD in conjunction with EIS has enabled the establishment of a link between EIS time constants and structural changes associated with the evolution of corrosion products with time. By comparison to previous studies by the authors and others in this field, this communication provides the first direct experimental evidence linking SR-GIXRD surface compositional data to otherwise indistinctive EIS time constants.
Keyword Carbon dioxide corrosion
Carbon steel
Chukanovite
Impedance
Synchrotron radiation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Chemistry and Molecular Biosciences
 
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Created: Fri, 22 Jul 2016, 08:35:00 EST by Mrs Louise Nimwegen on behalf of Learning and Research Services (UQ Library)