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Abstract A detailed analysis of the course in which bare metal surface is generated is presented. The decay law of true current flowing through fresh metal surface, i(t), is independent of the methods of scratching the oxide film on the metal surface, and of parameters selected in experiment. The true current decay i(t) can be calculated from the measured transient current, Ⅰ(t), by the following relationship.I(t)=integral from t_0 to (t+t_0)(aui(t)dtwhen freshly generated stainless steel surface is passivating in the chloride solution, the true current decay law follows the following equationi(t)=C_1exp (-a_1t)+C_2 exp(-a_2t)The first term in this equation is associated mainly with the growth of MeOH adsorbed film, while the second term is related to the growth of oxide film. At potentials above a critical potential that is well below the pitting potential measured from the surface covered with oxide film, corrosion pit would occur on the freshly generated surface. The film growth on the stainless steel in MgCl_2 solution follows the high field ion conduction mechanism.
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Received: 25 February 1987
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[1] Burstein. G, T.; Marshall. P. I., Corros. Sci. 23． 125(1983)
[2] Bulman. G. M.; Tseung. A. C. C., Corros. Sci., 12． 415 (1972)
[3] Ford, F. P.; Silverman, M., Corrosion, 36, 558(1980)
[4] Alessandro Frignani; Fabrizio Zucchi; Massimo Zucchini; Giordano Trabanelli, Corros. Sci., 20, 791 (1980)
[5] Engseth, P,; Scully, J. C., Corros. Sci,. 15． 505 (1975)
[6] Schwenk, W,; Rahmel, A., Electrochim. Acta, 5, 180(1961)
[7] Burstein. G. T.; Ashley, G. W., Corrosion. 39, 241(1983)
[8] Burstein, G. T., Newman, R. C., Electrochim. Acta. 25, 10009(1980)
[9] Weissmantel, C.; Schwabe, K.; Hecht, B., Werk. Korros., 12, 353(1961)
[10] Beck. T. R., Electrochim. Acta. 18, 815(1973)
[11] Kruger. J.; Ambrose, J. A., NBSIR73～244 , Report, No. 4, National Bureau of Standards, Washington D. C., July (1973)
[12] Keddam. M.; Oltra, R.; Colson, J. C.; Desestret, A., Corros. Sci., 23, 441 (1983)
[13] Lees, D. J.; Hoar, T. P., Corros. Sci., 29, 761 (1980) |
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