Configured Semiconductor/Insulator Coatings for Corrosion Prevention

ABSTRACTSemiconductor and insulator coatings, appropriately configured in Metal-Semiconductor and Metal-Insulator -Semiconductor structural formats, are shown to result in the formation of a built-in active electronic barrier on metal surfaces. This interfacial electronic barrier impedes the transfer of electrons from the metal to oxidizing species present at the metal surface, thereby providing protection against corrosion

F. C. Jain; J. J. Rosato; K. S. Kalonia; V. S. Agarwala

2011

Scholarcy highlights

  • ABSTRACTSemiconductor and insulator coatings, appropriately configured in Metal-Semiconductor and Metal-Insulator-Semiconductor structural formats, are shown to result in the formation of a built-in active electronic barrier on metal surfaces. This interfacial electronic barrier impedes the transfer of electrons from the metal to oxidizing species present at the metal surface, thereby providing protection against corrosion
  • The effectiveness of the electronic barrier concept has been confirmed using weight-loss, and cathodic and anodic polarization measurements on aluminum samples coated with indium tin oxide ITO and SiO2 films
  • The active electronic barrier approach is a generic methodology to inhibit corrosion, and it can be realized using other semiconductor/insulator combinations including semiconducting polymer coatings

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