Abstract
The literature concerning research on cathodically modified alloys is reviewed, with particular reference to stainless steels. The mechanism by which the cathodic additions (platinum group metals) can cause spontaneous passivation to occur in non-oxidising acids is discussed. Typical results showing the dependence of the parameters of spontaneous passivation on alloy composition and on environmental conditions are given for cathodically modified stainless steels, chromium based alloys, and titanium based alloys. The implications of these studies for the possible commercial use of these alloys are also considered.
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