Influence of the outer electrode material on ozone generation in corona discharges

Horvath, G.; Skalny, J. D.; Orszagh, J.; Vladoiu, R. and Mason, N. J. (2010). Influence of the outer electrode material on ozone generation in corona discharges. Plasma Chemistry and Plasma Processing, 30(1) pp. 43–53.

DOI: https://doi.org/10.1007/s11090-009-9208-9

Abstract

The effect of the outer electrode material on negative corona discharge current and the process of ozone formation have been studied in coaxial cylindrical system of electrodes fed by dry oxygen. Three materials (brass, duralumin, stainless steel) were tested in experiments. The probability coefficient of ozone decomposition was found be slightly higher compared with known data. The coefficient of probability of ozone decomposition is decreasing with the time of exposition of the metal surface to mixture of oxygen and ozone. The effect of the electrode material on the current voltage characteristic of the discharge was marginal. In contrast to this at average energy density η higher than 10 J/cm3 the ozone concentration is affected by material of the outer electrode. A strong influence of the temperature of metal electrode on the probability coefficient of ozone decomposition was illustrated from the decrease of the ozone production.

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