Characterization of Composite Coatings Obtained by Electrodeposition

Abstract

The work concerns the literature review which unambiguously shows that the composite coatings which apart from thed-electron metal powder contain another component of the composite, i.e. thep-electron metal powder, have not been obtained so far. This kind of qualitative composition of the coating enables selective extraction of thep-electron metal from the nickel matrix of the composite, as well as – after heat treatment – results in the formation of the mixture of intermetallic phases with the hitherto unknown activity in the electrochemical processes.

Cyclic Voltammetry Studies on Electrochemical Behavior of the Composite Ni-P+TiO₂ Electrocatalysts in Alkaline Solutions

“…The object of the electrochemical studies were composite Ni-P+TiO 2 coatings and comparable Ni-P deposits, obtained electrolytically under the same conditions at a deposition current density of j dep = 240 mA cm -2 for deposition time, t dep = 30 min, at a temperature of 293, 303, 313, 323, and 333 K. Electrolytic production of such coatings has been described in detail previously [4][5][6][7][8][9][10].…”

“…The amorphous materials are of a great importance for the electrochemical reactions, where the essential role plays their ability to adsorption and selectivity of changes of the reacting substances. The oxides of d-electron metals, particularly titanium, are distinguishable among other electrode materials by their catalytic properties in the production process of many chemical compounds [4][5][6][7][8][9][10]. One of the methods for the obtainment of the composite electrode materials is an electrolytic co-deposition of metal or its alloys as a matrix and oxide of d-electron metal as an embedded composite component.…”