Certain characteristics of nickel-containing and copper-containing oxide-phosphate layers on titanium

Abstract

The oxide-phosphate layers on titanium are formed by plasma-electrolytic oxidation in aqueous electrolytes with polyphosphate complexes of Ni(II) and Cu(II). The obtained coatings are investigated by X-ray photoelectron spectroscopy and X-ray spectral analysis. A nonuniform distribution of elements over the thickness of coatings is established; they are characterized by an insignificant titanium content on the surface, concentrated copper in the surface layer, and the presence of carbon. It is shown that the ob CO2 tained compositions film/Ti manifest a certain catalytic activity in the oxidation of CO to CO2.