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Influence of Ultrasound Power and Frequency Upon Corrosion Kinetics of Zinc in Saline Media by M.-L Doche; J.-Y Hihn; A Mandroyan; R Viennet; F Touyeras is a Engineering article available to read on EtoBox.

What is Influence of Ultrasound Power and Frequency Upon Corrosion Kinetics of Zinc in Saline Media about?

This paper is devoted to zinc corrosion and oxidation mechanism in an ultrasonically stirred aerated sodium sulfate electrolyte. It follows a previous study devoted to the influence of 20 kHz ultrasound upon zinc corrosion in NaOH electrolytes [Ultrason. Sonochemis. 8 (2001) 291]. In the present work, various ultrasound regimes were applied by changing the transmitted power and the wave frequency (20 and 40 kHz). Unlike NaOH electrolyte which turns the zinc electrode into a passive state, Na 2 SO 4 saline media induces soft corrosion conditions. This allows a study of the combined effects of ultrasonically modified hydrodynamic and mechanical damage (cavitation) upon the zinc corrosion process. A series of initial experiments were carried out so as to determine the transmitted power and to characterize mass transfer distribution in the electrochemical cell. Zinc corrosion and oxidation process were subsequently studied with respect to the vibrating parameters. When exposed to a 20 kHz ultrasonic field, and provided that the electrode is situated at a maximum mass transfer point, the corrosion rate reaches values six to eight times greater than in silent conditions. The zinc oxidati

Who reads Influence of Ultrasound Power and Frequency Upon Corrosion Kinetics of Zinc in Saline Media?

Author

M.-L Doche; J.-Y Hihn; A Mandroyan; R Viennet; F Touyeras

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1350-4177)

Published

2003

Language

EN

Field

Engineering (Physical Sciences)