A multielectrode localized corrosion sensor was developed and used for comparing localized corrosion of Fe-Ni-Cr-Mo alloys in chloride solutions. Experimental results indicated that the coupled multielectrode sensor provides a rapid real-time response to changes in temperature and salt concentration. It was demonstrated that the sensor has a lower detection limit of 5×10-11 A with respect to corrosion current and 2o10-8 A/cm2 with respect to the corrosion current density for the miniature electrodes used in the sensors.

Subject
Electric current, Sensors, Stainless alloys, Nickel based alloys, Ferric chloride, Deviation, Chloride solutions, Metals, Anodic current, Localized corrosion, Stainless steel, Alloys, Electrodes
Keywords:
galvanically coupled sensor, multiple-electrode sensor, multielectrode, localized corrosion sensor, wire beam electrode, on-line localized corrosion monitoring
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2002
Association for Materials Protection and Performance (AMPP)
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