Journal of Materials Science

, Volume 21, Issue 4, pp 1269–1274 | Cite as

Electrical properties of anodized aluminium in a humid atmosphere

  • Yoshihiko Sadaoka
  • Yoshiro Sakai
  • Shoji Matsumoto
Papers

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.

Keywords

Polymer Aluminium Electrical Property Oxide Film Equivalent Circuit 

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Copyright information

© Chapman and Hall Ltd. 1986

Authors and Affiliations

  • Yoshihiko Sadaoka
    • 1
  • Yoshiro Sakai
    • 1
  • Shoji Matsumoto
    • 1
  1. 1.Department of Industrial Chemistry, Faculty of EngineeringEhime UniversityMatsuyamaJapan

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