Estimation of the slope of polarization curves in the vicinity of the corrosion potential.
J Electrochem Soc 1979 Jun; 126(6):891-893
Numerical methods were used to derive an improved estimate of the slope of the polarization curve in the vicinity of the corrosion potential. The resulting three-point linear polarization equation has the same form as the conventional two-point equation, but yields a substantially more accurate value for the corrosion current. For /a0/ = 10 mv and tafel constants (b1a and b2c) 30 mv or larger, the error in computing the corrosion current from the three-point equation is only 10 pct or less.
Mining-industry; Mineral-processing; Metals;
Author Keywords: corrosion; electric potential; polarisation; electric current; electrochemistry; electrodes; numerical analysis; linear polarization; corrosion current; numerical methods
S. D. Cramer, Bureau of Mines, U.S. Department of the Interior, Avondale Metallurgy Research Center, Avondale, Maryland 20782
OP; Journal Article
Journal of the Electrochemical Society