Journal
CORROSION SCIENCE
Volume 52, Issue 4, Pages 1499-1507Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.12.034
Keywords
Stainless steel; EIS; Cyclic voltammetry; Passive films; Reactor conditions
Funding
- Finnish Funding Agency for Research and Innovation (TEKES)
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The electrochemical behaviour of AISI 316L steel and its constituent metals in simulated Kraft digester white liquor at 170 degrees C has been studied by registering slow scan rate voltammograms and impedance spectra at the corrosion potential. Interpretation of the results in terms of two approaches - the Mixed-Conduction Model for passive films and a two-step dissolution reaction - allowed for the estimation of corrosion currents and polarisation resistances as depending on the material and electrolyte medium. Tentative conclusions on the effect of sulphur-containing species in the white liquor on the corrosion mechanism of the studied materials are drawn. (C) 2010 Elsevier Ltd. All rights reserved.
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