New Structure for Corrosion Evolution Detection
Keywords:Corrosion, ceramic, detection, evolution, conductivity, degradation
This article presents a microwave sensor capable of detecting and following the evolution of the corrosion of zinc material. This
sensor is based on zinc wires of different widths deposited on the surface of the ceramic resonator. Numerical studies show that due to the evolution of the corrosion, the progressive degradation of the conductivity of the formed zinc grid (from 6S/µm to 0.015S/µm) cause a progressive frequency shift (230MHz), a degradation of the quality factor (from Q0 = 50 to Q0 < 5) and a decreased level of the coefficient transmission of the TE101 mode of the resonator (from -8dB to <-35dB). Experimental measurements of this sensor in a corrosive environment show a gradual shift of the resonance frequency of the TE101 mode, a decreased level of S21 transmission coefficient and a degradation of the unloaded quality factor.
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