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논문 기본 정보

자료유형
학술저널
저자정보
F. Varela (Institute for Frontier Materials Deakin University) M. YJ Tan (Institute for Frontier Materials Deakin University) B. Hinton (Institute for Frontier Materials Deakin University) M. Forsyth (Institute for Frontier Materials Deakin University)
저널정보
한국부식방식학회 Corrosion Science and Technology CORROSION SCIENCE AND TECHNOLOGY 제16권 제3호
발행연도
2017.6
수록면
109 - 114 (6page)
DOI
https://doi.org/10.14773/cst.2017.16.3.109

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Monitoring of corrosion is in most cases based on simulation of environmental conditions on a large andcomplex structure such as a buried pipeline using a small probe, and the measurement of thermodynamicsand kinetics of corrosion processes occurring on the probe surface. This paper presents a hybrid corrosionmonitoring probe designed for simulating deteriorating conditions wrought by disbonded coatings and formeasuring current densities and distribution of such densities on a simulated pipeline surface. The conceptof the probe was experimentally evaluated using immersion tests under cathodic protection (CP) in highresistivity aqueous solution. Underneath the disbonded area, anodic currents and cathodic currents werecarefully measured. Anodic current densities were used to calculate metal loss according to Faraday’s law. Calculated corrosion patterns were compared with corrosion damage observed at the surface of the probeafter a series of stringent tests. The capability of the probe to measure anodic current densities under CP,without requiring interruption, was demonstrated in high resistivity aqueous solution. The pattern of calculatedmetal loss correlated well with corrosion products distribution observed at the array surface. Working principlesof the probe are explained in terms of electrochemistry.

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