Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Evaluation of Protective Ability of High Solid Novolac Clear Coatings Through Electrochemical Techniques

  • Ramesh, D. (Department of Chemistry, Muthayammal College of Arts and Science Rasipuram) ;
  • Shakkthivel, P. (Department of Industrial Chemistry, Alagappa University) ;
  • Manickam, A. Susai (Department of Industrial Chemistry, Alagappa University) ;
  • Kalpana, A. (Department of Industrial Chemistry, Alagappa University) ;
  • Vasudevan, T. (Department of Industrial Chemistry, Alagappa University)
  • Published : 2006.04.01
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Abstract

Solvent free high solid coatings are increasingly used as they posses number of advantages such as, lower cost per unit film thickness, better performance and eco-friendliness. In the present study polymeric film-forming materials such as aniline-novolac (ANS), cresol-novolac (CNS) and acrylic copolymer blended cresol-novolac (ACNS) coating materials have been prepared. The corrosion resistance properties of the prepared high solid coating materials have been evaluated through potential-time, potentiodynamic polarization and electrochemical impedance studies (EIS). Among the three coating systems, cresol-novolac polymer coated substrates offer better corrosion resistance property and the order of the performance was found as CNS > ACNS > ANS. We can recommend these systems for use in automobile applications.

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