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A novel electrochemical method for monitoring corrosion under insulation

Aung, Naing Naing, Wai, Wong Keng and Tan, Yong-Jun 2006, A novel electrochemical method for monitoring corrosion under insulation, Anti-corrosion methods and materials, vol. 53, no. 3, pp. 175-179, doi: 10.1108/00035590610665590.

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Title A novel electrochemical method for monitoring corrosion under insulation
Author(s) Aung, Naing Naing
Wai, Wong Keng
Tan, Yong-JunORCID iD for Tan, Yong-Jun orcid.org/0000-0002-0765-108X
Journal name Anti-corrosion methods and materials
Volume number 53
Issue number 3
Start page 175
End page 179
Total pages 5
Publisher Emerald Group Publishing
Place of publication Bingley, England
Publication date 2006
ISSN 0003-5599
1758-4221
Keyword(s) corrosion
electrical insulation
electrodes
metals
Summary Purpose - The objective of this work was to develop practical experimental techniques for monitoring corrosion in "difficult-to-test" conditions such as corrosion under insulation (CUI).

Design/methodology/approach - An electrochemically integrated multi-electrode array namely the wire beam electrode (WBE) method has been used in combination with noise signature analysis for the first time to monitor the penetration of corrosive species under simulated corrosion-under-insulation conditions. Corrosion of aluminium exposed under insulation materials such as rock wool, glass wool, cotton wool and tissue paper has been successfully monitored.

Findings - A typical potential noise signature of a major potential jump from AA1100 WBE was observed which corresponded to the corrosive species reaching the WBE surface in WBE current distribution map. A good correlation between the galvanic current maps and the corroded surface was also observed.

Originality/value - The preliminary results suggest that the proposed novel electrochemical method is capable of monitoring CUI.
Language eng
DOI 10.1108/00035590610665590
Field of Research 091207 Metals and Alloy Materials
030604 Electrochemistry
030301 Chemical Characterisation of Materials
Socio Economic Objective 870302 Metals (e.g. Composites, Coatings, Bonding)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, Emerald Group Publishing Limited
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047739

Document type: Journal Article
Collection: Institute for Frontier Materials
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