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ON-LINE COMPUTER MEASUREMENTS AND ANALYSIS IN CORROSION ELECTROCHEMICAL INVESTIGATIONS Ⅰ. CALCULATION OF CORROSION RATES FROM POLARISATION MEASUREMENTS |
Song Shizhe Chen Wuping Jiang Wei (Dept. of Applied Chemistry; Tianjin University) |
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Abstract An on-line measurement system of corrosion electrochemistry with a usual microcomputer was established. It consists of a computer controlled potentiostat. a series of softwares for electrochemical measurement and applied programs for the determinations of corrosion parameters. By the arrangement of computer program, generation of a successive step signal, electrochemical measurement, and the acquisition, analysis and calculation of data have been performed automatically. Calculation of metal corrosion rates from polarisation data were taken with the aid of the kinetic equation of corrosion system. By solving the residual equations through iteration, the corrosion rates and Tafel constants can be obtained. Examples of this method are shown and experimental technique is introduced. The reliability and the field of application are also analysed and discussed.
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Received: 25 June 1985
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Cite this article:
Song Shizhe Chen Wuping Jiang Wei (Dept. of Applied Chemistry; Tianjin University). ON-LINE COMPUTER MEASUREMENTS AND ANALYSIS IN CORROSION ELECTROCHEMICAL INVESTIGATIONS Ⅰ. CALCULATION OF CORROSION RATES FROM POLARISATION MEASUREMENTS. J Chin Soc Corr Pro, 1985, 5(3): 197-205.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1985/V5/I3/197
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[1] "Computer in Chemistry and Instrumentation V.2 Electrochemistry, Calculations Simulation and Instrumentation" Edited by J. S. Mattson H. B. Mark and H. C. Mac Donald Marcel Dckker, New York, (1972) [2] Cohem, M. I.; Heimann. P. A., J. Research of the National Bureau of Standards, 83 (5) , 429(1978) [3] Sierra, H. B., et al., Surface Technology, 6, 61(1977) [4] Brown, O. R., Electrochimica Acta, 27(1) , 33(1982) [5] Peterson, W. M.; Siegerman, H., "Electrochemical Corrosion Testing ASTM STP 727" 390~406 (1981) [6] Mansfeld, F., Corrosion, 29(10) , 397(1973) [7] Greene, N. D., Gandhi, R. H., Materials Performance, 7, 34(1982) [8] 宋诗哲“中国腐蚀与防护学报”,1(3) ,76(1981) [9] ASTM G59-78 "1979 Annual book of AsTM Standards" part, 10, P.964 [10] ASTM G5-72 "1976 Annal book of ASTM Standards" part, 10, P. 592 |
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