The effect of nanocrystallites in the pores of PEO coatings on their magnetic properties

The coatings manifesting ferromagnetic characteristics have been formed on titanium and aluminum by plasma electrolytic oxidation in alkaline electrolytes additionally containing iron oxalate and cobalt or nickel acetate. The metals of iron subgroup are found be concentrated in pores of PEO coatings, as a rule, in a form of crystallites. In a number of cases the relation between crystallite compositions and magnetic properties of the coatings has been established.