CORROS: A COMPUTER PROGRAM FOR ANALYZING POLARIZATION RESISTANCE DATA

Authors
  1. Hanham, C.M.
  2. Gallagher, P.J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
A program, CORROS, has been written to run on the DEC 20 computer at DREA. It provides a means for analyzing polarization resistance data from potentiodynamic polarization experiments, in order to determine corrosion current densities. CORROS accepts data files which are transferred from an EG&G PARC Model 350 Corrosion Measurement System to the DEC 20 computer with another computer program, C11A20. A nonlinear least squares curve fitting technique is used to fit a curve, which satisfies the Stern-Geary equation, to the experimental data. The corrosion potential, the anodic and cathodic Tafel constants and the polarization resistance and the corrosion current density along with their estimated errors, and the relative RMS error of the fitted data, are determined and stored in a file LIST. Another file PLOTS, which is accepted by SAPLTF for graphic presentation of the data, is also output.
Report Number
DREA-TC-86-303 — Technical Communication
Date of publication
15 Apr 1986
Number of Pages
85
DSTKIM No
86-02236
CANDIS No
96953
Format(s):
Hardcopy;Originator's fiche received by DSIS

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