A Live Demonstration Calculating Corrosion Rates with LPR and EIS presented on August 6th, 2020 hosted by Gamry Instruments and presented by Andrew McCaskill.
Hi, thanks for the excellent presentation. Quick question, in some cases it is allowed to polarise samples with respect to reference electrode as well as open circuit potential - what is the purpose of this? What happens if one polarised wrt reference instead of ocp, would such lpr data be useful? Thank you
Thank you for your inquiry. Ru and Rp is the model represent the solution resistance and polarization resistance. If you have any additional questions, please contact us at techsupport@gamry.com or by completing this contact form on our web site: www.gamry.com/support/contact-technical-support/
A Tafel Experiment Webinar video has been added to RU-vid. You can find this video here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BN3-VYlxK3w.html
Can this device be used in industries? With what electrodes? Is the working electrode the same metal as the tank or does another metal enter the tank? How are the connections?
Thank you for your question. Please contact our Technical Support Team: 1) Email techsupport@gamry.com OR 2)Complete the form on our website: www.gamry.com/support-2/contact-technical-support Thanks again for your support of Gamry Instruments
A mask was used to define the active area for exposure to the electrolyte for LPR measurements. Would the size of the active area affect the magnitude of the measured current during the voltage scanning? The related question is: Was the Icorr as shown in Gamry Echem Analyst a current, or a current density (per the active area)? I will appreciate a clarification, as I have seen people using Gamry to report their results of Icorr by the unit of Amp and also seen other results in the unit of Amp/cm2. Thank you.
Yes. The larger the active area, the more current that will flow. All current measurements made in Framework are current, not current density. In Echem Analyst, the current can be displayed as either overall current, or area normalized current. This can be changed in the Echem Analyst Options. If you have additional questions, please contact one of our Support Engineers at techsupport@gamry.com. They will be happy to help further.
Hello, if I need to measure a corrosion of the coating on the stainless steel electrode in the absence of any solvent. How should I setup the experiment? Thank you
You will need an electrolyte containing solution in order to conduct corrosion experiments. The setup described here would be a good place to start: www.gamry.com/application-notes/corrosion-coatings/corrosion-techniques-polarization-resistance/ If you have additional questions, please contact us at techsupport@gamry.com”
