Electrochemistry Open LessonsSustainable Electrochemical Science & Technology, BRIN

Tools

Corrosion explorer

An interactive Evans diagram, and calculators for corrosion rate, the Stern–Geary equation and inhibitor efficiency. The background is in Lesson 5.1 and Lesson 5.2.

Evans diagram

Change the kinetics of metal dissolution and of the cathodic reaction, and see where they cross.

Sources

  1. M. Stern, A. L. Geary, Electrochemical polarization I. A theoretical analysis of the shape of polarization curves, J. Electrochem. Soc. 104 (1957) 56–63.
  2. E. McCafferty, Validation of corrosion rates measured by the Tafel extrapolation method, Corros. Sci. 47 (2005) 3202–3215.
  3. ASTM G102, Standard practice for calculation of corrosion rates and related information from electrochemical measurements, ASTM International.
  4. ASTM G59, Standard test method for conducting potentiodynamic polarization resistance measurements, ASTM International.

These tools are for learning and quick checks. Keep the raw data and the full calculation for any paper, and state every assumption in the methods.