New passive ceramic sensor for corrosion detection

We present in this paper a new passive ceramic corrosion sensor which can be integrated into a structure submitted to a corrosive environment. The corrosion detection mechanism is based on the modification of a resonator frequency as a function of the corrosion level. An alumina substrate is covered...

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Bibliographic Details
Main Authors: Jamal, Rammal, Nicolas, Delhote, Olivier, Tantot, Serge, Verdeyme, Francois, Gallee, Stephane, Rioual
Format: Conference Proceeding
Language:English
Subjects:
ceramic
Ceramics
Corrosion
Frequency measurement
grid
Metals
passive
Q-factor
Resonant frequency
sensor
Substrates
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Summary:We present in this paper a new passive ceramic corrosion sensor which can be integrated into a structure submitted to a corrosive environment. The corrosion detection mechanism is based on the modification of a resonator frequency as a function of the corrosion level. An alumina substrate is covered with a metal enclosure that is protected against corrosion apart from the middle of the top face. This latter, patterned as a grid, is made of a metal sensitive to corrosion. The cracks caused by the corrosion in the grid introduce a capacitive effect and cause a frequency shift of the resonance mode (f r ), and a degradation of unloaded quality factor (Q 0 ) as a function of the corrosion level.
DOI:10.1109/EuMC.2014.6986396