EFM Product Description

Electrochemical Frequency Modulation (EFM) is a useful technique for electrochemical corrosion testing. Our EFM software allows rapid measurement of corrosion rate without a priori knowledge of Tafel constants. Like Polarization Resistance or EIS, it is a non-destructive technique.

The EFM software runs under the Gamry Framework™, which in turn runs under the Microsoft® Windows® 7, 8, and 10 operating systems.

The EFM software allows you to explore EFM at the click of a button. Both a single-run EFM measurement and a long-term EFM Trend experiment are available in single-potentiostat or multiplexed-potentiostat variations. But when a standard test isn’t enough, you can create new tests using our Explain™ script language. Data manipulation and display are done using the Gamry Echem Analyst™.

You can use the EFM software with any one of Gamry Instruments’ potentiostats/galvanostats/ZRAs.

Further information may be available at the Gamry web site, www.gamry.com.

You can find a more detailed description of the theory of EFM in the following literature references:

• R.W. Bosch and W.F. Bogaerts, “Instantaneous Corrosion Rate Measurement with Small-Amplitude Potential Intermodulation Techniques”, Corrosion, 52 (1996) 204.
• R.W. Bosch, J. Hubrecht, W.F. Bogaerts, and B.C. Syrett, “Electrochemical Frequency Modulation: A New Electrochemical Technique for Online Corrosion Monitoring”, Corrosion, 57 (2001) 60.