theory of metal passivation - реферат по физике

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Тезисы:

  • And it is thermodynamically favourable for metal to dissolve as a result of these process.
  • This is one of the main factor of stability of metal in aggressive environment.
  • It is known that, there is no unified model of passivation.
  • In case of metal passsivation determining role plays water molecule.
  • Strong electric field. It define the transform of metal to metal oxide: [pic] .
  • Energetic inhomogeneity of metal surface.
  • Thus the processing of the first thin superficial layer of metal in oxide is finished.
  • Such phenomenon was first observed by M. Faraday.
  • Equilibrium exchange on the border with solution in which take part the ion OH- and Oox.
  • Number of nonequilibrium vacancy in the passivaing oxide lattice.
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