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Anticorrosion Coatings Based on Assemblies of Superhydrophobic Particles Impregnated with Conductive Oil

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Technical Report,01 Apr 2015,30 Apr 2016

Corporate Author:

Oak Ridge National Laboratory Oak Ridge United States

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We developed low contact resistance passivate coatings for electrical system components. The coatings inhibited the build-up of resistive corrosion on electrical connector backshells as well as on steel components that are commonly used in electrical equipment. The developed coatings are based on assemblies of superhydrophobic diatomaceous earth and silica particles. To enhance the corrosion resistance and achieve low electrical resistance, exfoliated graphene sheets were dispersed in polydimethylsiloxane and the electrically conductive suspension was impregnated inside the porous patterns of the silica particles. The coatings can be applied to steel components, steel components coated with zinc-nickel and electrical connectors through an aerosol spray process. Corrosion in electronic components cannot be readily detected and is the predominant cause for electronic component failures when electrical equipment is exposed to environmental conditions. The developed coatings are inexpensive and scalable and can potentially be utilized to effectively protect critical infrastructure from corrosion. The developed coatings are compatible with coatings that are currently being used in electronic components i.e. zinc-nickel.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Properties of Metals and Alloys
  • Electrical and Electronic Equipment

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