Hi, I performed anodic polarization experiment on samples of SS 316 and SS 316 L and received data for it. I am not sure how I can make quantitative comparison between the results of these experiments. Could someone give me an insight on how I should proceed? I have put the graphs of the anodic polarization experiment I got from 2 trial runs of the sample.
Dear Dr. Manas Tripathi ,
I hope you will find the following links useful where the method to obtain icorr and Ecorr is clearly explained:
-Getting Started with Electrochemical Corrosion Measurement by Gamry Instruments
Available at: https://www.gamry.com/application-notes/corrosion-coatings/basics-of-electrochemical-corrosion-measurements/
And at: https://www.gamry.com/assets/Application-Notes/Getting-Started-with-Electrochemical-Corrosion-Measurement.pdf
-Tafel Plot and Evans Diagram by Palmsense
Available at: https://www.palmsenscorrosion.com/knowledgebase/tafel-plot-and-evans-diagram/
-Electrochemical Corrosion Studies of Various Metals by Metrohm Available at: https://www.google.it/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwj-qePgorTsAhXSsaQKHSK5CMsQFjABegQIAhAC&url=https%3A%2F%2Fpartners.metrohm.com%2FGetDocumentPublic%3Faction%3Dget_dms_document%26docid%3D3347651&usg=AOvVaw3DOgpH4l6qq3FFmrQ0TAE2
-Tafel Curve in Electrochemistry by Wolfram Demontrations Project Available at: https://demonstrations.wolfram.com/TafelCurveInElectrochemistry/
Good work and best regards, Pierluigi Traverso.
Detecting more than one peak in the polarization curves indicates that more than one phase are available on the corroded surface. you could follow below article:
http://doi.org/ 10.3103/S1061386220030061
Yes dear Manas Tripathi you did well, it is possible to determine icorr and Ecorr graphically from anodic polarization curves for SS 316 and SS 316 L to make quantitative ranking for their corrosion resistance in terms of icorr and Ecorr values . The attached figure shows how you should to proceed and managing the determination methodology. Hope my contribution is helpful and any feedback is welcomes.
Best regards…
tout d'abord votre graphe est incomplet, il faut montrer la partie cathodique. m^me si la réaction cathodique est faible (généralement c'est la réduction de H+ ou de l'O2 tout dépend du milieu électrolytique. le passage au courbes de tafel vous donne le Ecor et le icorr.
oui bien sûr, mais c'est votre logiciel qui va vous donner ces paraméttres en s'appouillant sur les loi de Tafel
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