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A Corrosion Sensor for Monitoring the Early-Stage Environmental Corrosion of A36 Carbon Steel.


ABSTRACT: An innovative prototype sensor containing A36 carbon steel as a capacitor was explored to monitor early-stage corrosion. The sensor detected the changes of the surface- rather than the bulk- property and morphology of A36 during corrosion. Thus it was more sensitive than the conventional electrical resistance corrosion sensors. After being soaked in an aerated 0.2 M NaCl solution, the sensor's normalized electrical resistance (R/R?) decreased continuously from 1.0 to 0.74 with the extent of corrosion. Meanwhile, the sensor's normalized capacitance (C/C?) increased continuously from 1.0 to 1.46. X-ray diffraction result indicates that the iron rust on A36 had crystals of lepidocrocite and magnetite.

SUBMITTER: Chen D 

PROVIDER: S-EPMC5456204 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature

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A Corrosion Sensor for Monitoring the Early-Stage Environmental Corrosion of A36 Carbon Steel.

Chen Dong D   Yen Max M   Lin Paul P   Groff Steve S   Lampo Richard R   McInerney Michael M   Ryan Jeffrey J  

Materials (Basel, Switzerland) 20140808 8


An innovative prototype sensor containing A36 carbon steel as a capacitor was explored to monitor early-stage corrosion. The sensor detected the changes of the surface- rather than the bulk- property and morphology of A36 during corrosion. Thus it was more sensitive than the conventional electrical resistance corrosion sensors. After being soaked in an aerated 0.2 M NaCl solution, the sensor's normalized electrical resistance (<i>R</i>/<i>R</i>₀) decreased continuously from 1.0 to 0.74 with the  ...[more]

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