Borstel and Spahrbier w2x have found that the rate of
zinc corrosion can be slowed down only by the use of a
suitable kinetic barrier. This can be achieved by a number
of possible means. One of them is to alloy zinc with small
concentrations of metals from groups III to V of the
periodic table of elements, e.g., In, Ga, Al, Pb, Bi, and
combination thereof w3x to modify the rest potential of zinc
in electrolyte. Another approach consists in modifying the
electrolyte composition with additives of organic inhibitors,
that are absorbed on zinc surface at ‘kink sites’.
These organic additives fall into two classes. The first one
involves substances interacting with the metal molecules,
the second one comprises compounds interacting with the
oxides present on the metal surface w4x. It is obvious that
this interaction is affected by contaminations present on
the metal surface and as a consequence the rate of zinc
corrosion is affected too.
Borstel and Spahrbier w2x have found that the rate of
zinc corrosion can be slowed down only by the use of a
suitable kinetic barrier. This can be achieved by a number
of possible means. One of them is to alloy zinc with small
concentrations of metals from groups III to V of the
periodic table of elements, e.g., In, Ga, Al, Pb, Bi, and
combination thereof w3x to modify the rest potential of zinc
in electrolyte. Another approach consists in modifying the
electrolyte composition with additives of organic inhibitors,
that are absorbed on zinc surface at ‘kink sites’.
These organic additives fall into two classes. The first one
involves substances interacting with the metal molecules,
the second one comprises compounds interacting with the
oxides present on the metal surface w4x. It is obvious that
this interaction is affected by contaminations present on
the metal surface and as a consequence the rate of zinc
corrosion is affected too.
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