Abstract
Complex impedance measurements have been made on porous anodized aluminium. The influence of humidity on electrical properties can be explained by an equivalent circuit based on the physical structure of the porous oxide film. The estimated resistance component decreases exponentially with humidity, while the humidity dependence of the two types of capacitance components cannot be confirmed below 80% r.h. Because the oxide film removes the barrier layer, a fair agreement between the impedance at 102 Hz and the resistance component of the pore sides is observed in humid atmospheres.
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Sadaoka, Y., Sakai, Y. & Matsumoto, S. Electrical properties of anodized aluminium in a humid atmosphere. J Mater Sci 21, 1269–1274 (1986). https://doi.org/10.1007/BF00553261
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DOI: https://doi.org/10.1007/BF00553261