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Electrochemical Corrosion Potential (Rest Potential)

Last updated: December 23, 2018

What Does Electrochemical Corrosion Potential (Rest Potential) Mean?

Electrochemical corrosion potential refers to the measurable voltage difference between a given metal, an immersed electrolytic environment and a chosen standard reference electrode (SRE).

Electrochemical corrosion potential is also known as rest potential.


Corrosionpedia Explains Electrochemical Corrosion Potential (Rest Potential)

Standard reference electrodes (SREs) are electrodes with a well-established, scientifically determined voltage reading, from which the voltage of other metal substances can be measured when examined relatively. The metal is connected to an SRE and the potential difference is measure with a voltmeter.

Two common standard reference electrodes (SREs) include:

  • Normal hydrogen electrode (NHE) (E ˜ 0.000 V)
  • Standard hydrogen electrode (SHE) (E = 0.000 V)

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