The following is a discussion of the article entitled “The Advantages of Galvanostatic Polarization Resistance Measurements,” by Denny A. Jones, published in Corrosion, Vol. 39, No. 11, p. 444 (1983).
DISCUSSION by Richard F. Stratfull, Corrosion Engineering, Inc., Rt. 1, Box 190-d, West Sacramento, CA 95691.
The increasing use of both the E-log-I curve and polarization resistance is providing great strides in corrosion technology. Therefore, it was with great interest that the techniques for obtaining polarization resistance measurements were reviewed. However, the author indicates that he uses polarization resistance measurements to calculate the corrosion current, but does not show how he obtained the anodic or cathodic Tafel slope which would enable one to calculate the corrosion current.
For the applications of the polarization resistance which were discussed by the author, it is apparent that he is obtaining correct results. However, in high electrical resistance electrolytes such as concrete, it...
