ISO 17475 CORR 1-2006 Corrosion of metals and alloys - Electrochemical test methods - Guidelines for conducting potentiostatic and potentiodynamic polarization .pdf

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1、ICS 77.060 Ref. No. ISO 17475:2005/Cor.1:2006(E) ISO 2006 All rights reserved Published in Switzerland INTERNATIONAL STANDARD ISO 17475:2005 TECHNICAL CORRIGENDUM 1 Published 2006-05-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATIONCorrosion of metals and

2、 alloys Electrochemical test methods Guidelines for conducting potentiostatic and potentiodynamic polarization measurements TECHNICAL CORRIGENDUM 1 Corrosion des mtaux et alliages Mthodes dessais lectrochimiques Lignes directrices pour la ralisation de mesures de polarisations potentiostatique et po

3、tentiodynamique RECTIFICATIF TECHNIQUE 1 Technical Corrigendum 1 to ISO 17475:2005 was prepared by Technical Committee ISO/TC 156, Corrosion of Metals and alloys. Page 2 Replace Figure 1 with the following figure. ISO 17475:2005/Cor.1:2006(E) 2 ISO 2006 All rights reserveda) Corrosion rate is under

4、diffusion control b) Example by diffusion of oxygen in water Key X potential Y log current density 1 cathodic 2 anodic E corcorrosion potential i corcorrosion current density E rreversible electrode potential i oexchange current density i dlimiting diffusion current density, which corresponds to the maximum diffusion rate of oxygen in the solution Figure 1 Schematic anotic and cathodic polarization curves for metals corroding in a system where the cathodic reaction is reduction of protons