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Method and apparatus for galvanostatic and potentiostatic electrochemical investigation of the rate of corrosion processes

  • US 4,155,814 A
  • Filed: 11/30/1977
  • Issued: 05/22/1979
  • Est. Priority Date: 11/30/1977
  • Status: Expired due to Term
First Claim
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1. A method for galvanostatic and potentiostatic electrochemical measurement of the rate of corrosion processes, wherein a working electrode, counter-electrode and reference eletrode are immersed in an electrolyte and the electromotive force appearing on the cell formed by said working electrode and said counter-electrode is measured and related to said reference electrode and the corrosion rate derived therefrom, comprising carrying out said measurement as non-destructive testing on the object to be examined, wherein inhomogeneous corrosion conditions are provided for by an electrode system comprising a plurality of working electrodes, at least one counter-electrode and a plurality of reference electrodes, different areas of the object to be examined forming said plurality of working electrodes, and during the test a spatial combination of at least two corrosion effects is formed, the corrosion behavior of the surface is recorded and evaluated as a function of the inhomogeneities of the corrosion effects and the time, either simultaneously or in one and the same measuring cycle.

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