Monitoring of the corrosion process on sulphide film formation with electrochemical and optical measurements
By Hemmingsen, Tor; Fusek, Frederik & Skavà¥s, Erling
Published in Electrochimica Acta
NULL
2006
Abstract
In the present study the film formation growth rate has been monitored by electrochemical and optical measurements. Video sequences of the electrode surface have been analysed with respect to grey level by use of a MATLAB® programme in order to follow the kinetics of film formation. Parameters such as pH, the concentration and type of sulphur species as well as applied potentials have been varied. The rate of the film formation was quantified by video monitoring followed by picture analyses. Sulphide and thiosulphate formed the densest film at high pH, while sulphite and dithionite formed the densest film at low pH.
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