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Impedance-based sensing of the interlayer adhesion loss in organic coating systems

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Abstract

The detrimental effects of environmental conditions on the protective organic systems on the metals are well known. Variable parameters like temperature, humidity and UV radiation influence the protective properties of coatings on metals. Adhesion of coatings to the substrate and the interlayer adhesion between separate coating layers are main parameters describing the protective properties of coating systems. Traditional methods of evaluation are destructive and do not allow the monitoring of such influences. By using conductive electrodes between the layers of protective coating system and electrochemical impedance spectroscopy (EIS) method, it is possible to detect the changes caused by adhesive debonding and accumulation of water at the interface. Large changes in the impedance values were observed when humidity and temperature conditions were changed. A new approach to continuous monitoring and quantification of adhesion changes at real conditions using EIS was proposed. Examples of monitoring data during laboratory temperature cycling and during real outdoor exposure were shown.

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Authors and Affiliations

  1. Department of Electrochemistry, Corrosion and Materials Science, Gdansk University of Technology, 11/12 Narutowicza St., 80-952, Gdansk, Poland

    A. Miszczyk & K. Darowicki

  2. Research Institute for Pigments and Coatings, Allmandring 37, 70569, Stuttgart, Germany

    T. Schauer

Authors
  1. A. Miszczyk
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  2. K. Darowicki
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  3. T. Schauer
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Corresponding author

Correspondence to A. Miszczyk.

Additional information

Presented at the 4th Baltic Conference on Electrochemistry, Greifswald, March 13–16, 2005

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Miszczyk, A., Darowicki, K. & Schauer, T. Impedance-based sensing of the interlayer adhesion loss in organic coating systems. J Solid State Electrochem 9, 909–913 (2005). https://doi.org/10.1007/s10008-005-0050-6

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  • DOI: https://doi.org/10.1007/s10008-005-0050-6

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