Producing and studying oxide coatings containing manganese and nickel compounds on titanium from electrolyte suspensions

Abstract

Regular effects of anion-active surfactants added to silicate electrolyte suspensions containing dispersed MnO 2 and NiO particles on the composition, properties, and catalytic activity of the oxide compositions produced on titanium by plasma-electrolytic oxidation are studied. In both cases, introducing surfactants is shown to result in similar changes in the surface relief, namely, an increase in the surface domains and height drops between crests and hollows, as well as a simultaneous decrease in the size and concentration of pores. At the same time, the elemental and phase compositions of the coatings, as well as their catalytic activity with respect to the CO oxidation, are determined by the nature of both the solid particles and surfactant used.