Abstract
We consider a new concept - the electronic barrier - for corrosion prevention. The barrier is an electronic p-n junction made by topping one film of functionalized carbon nanotubes on another. Potentiodynamic tests, Raman spectroscopy and inspection by scanning electron microscope revealed that the order of the layers (namely, p-n or n-p) with respect to the metal surface does determine whether the metal corrodes or not.
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