Voltammetric Characteristics of the MetalOxideElectrolyte System at Electrode Polarization with Pulse Voltage

P. S. Gordienko^a, E. S. Panin^a, A. V. Dostovalov^b, and V. K. Usol’tsev^b

^a Institute of Chemistry, Far-East Division, Russian Academy of Sciences,
pl. Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia

^b Far-East State Technical University, ul. Pushkinskaya 10, Vladivostok, Russia

Received October 18, 2007

Abstract — The method of formation of oxide coatings on anodically polarized electrodes under galvanostatic mode with the online, computer-controlled measuring, processing, and calculation of electric parameters is proposed. Voltammetric characteristics of these processes are considered using a variable reactive resistance. It is shown that a thermal breakdown is preceded by an electric breakdown of potential barriers formed in the metal oxide–electrolyte system. In the oxide layer structure, three zones that differ in the structure and intensity of electric fields can be singled out. The ratio of these zones is determined by the electron work functions of metal, oxide, and electrolyte.

PACS: 82.45.Cc