Wireless and fully energetically passive corrosion sensors inspired from the chipless Radiofrequency Identification (RFID) technology are presented for the monitoring of degradation of materials. The device consists of a reader and a remote passive sensor. The study presents two radiofrequency corrosion sensitive resonators which can be integrated in such device. The first is sensitive to corrosion potential Ecorr with respect to a reference electrode. The radiofrequency characterization of this resonator demonstrates unambiguously the sensitivity of the method to the passivation of steel in sea water and to the degradation of organic coatings. In a second part, the sensing element is modified to provide information on electrical potential and current.
corrosion, corrosion potential, passive wireless sensors, radiofrequency, RFID technology.
Un des auteurs (RK) remercie la région Bretagne pour la contribution financière apportée à sa thèse.
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