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Visualising dynamic passivation and localised corrosion processes occurring on buried steel surfaces under the effect of anodic transients
journal contribution
posted on 2016-05-01, 00:00 authored by Ying HuoYing Huo, Mike Yongjun TanMike Yongjun Tan, Maria ForsythMaria ForsythA new method of visualising dynamically changing electrode processes has been demonstrated by mapping localised corrosion processes occurring on buried steel surfaces under the effect of anodic transients. Dynamically shifting external electrical interferences such as anodic transients are known to affect the efficiency of cathodic protection (CP) of underground pipelines; however unfortunately conventional techniques including electrochemical methods have difficulties in measuring such effects. In this paper we report that the wire beam electrode has necessary temporal and spatial resolutions required for measuring and visualising the dynamic effects of anodic transients on CP, passivation and localised corrosion processes occurring on buried steel surfaces. For the first time a critical anodic transient duration has been observed and explained as the incubation period for the breakdown of passivity and the initiation of localised corrosion.
History
Journal
Electrochemistry communicationsVolume
66Pagination
21 - 24Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
1388-2481Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, ElsevierUsage metrics
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