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中国腐蚀与防护学报  1988, Vol. 8 Issue (2): 87-95    
  研究报告 本期目录 | 过刊浏览 |
点蚀引发的热力学和动力学
魏宝明;郝凌
南京化工学院;南京化工学院
THERMODYNAMICS AND KINETICS OF PITTING INITIATION
Wei Baoming Hao Ling (Nanjina Institute Of Chemical Technology)
全文: PDF(748 KB)  
摘要: 本文作者对点蚀临界击破电位(φ_(cb))提出了严格的热力学定义,提出一个点蚀核形成过程的模型,继而推导出φ_(cb)与活性阴离子活度(α_X~-)的对数呈线性关系,确定了φ_(cb)、α_X~-,c,点蚀临界温度(T_c)之间的对应关系。然后,建立起点蚀核形成过程的动力学方程式,证明实测击破电位(φ_b)与φ_(cb)的关系为:φ_b=φ_(cb)+H,推得了不同恒定极化电位条件下点蚀诱导时间(τ)与α_X~-之间的几种函数关系,从理论上解释了许多作者的实验结果。最后,提出了实测φ_(cb)的可行方法。
Abstract:A Strict thermodynamic definition of the critical pitting potential (φcb)has been proposed. A model of pitting initiation was developed and the equation of φcb=α-blnα_(X~-)was derived from the definiton and the model, α_(X~-) being the activity of the active anion. It is shown that φcb, α_(X~-),c and T_c (critical temperature) are correspondent to one another, Furthermore, the kinetics equation of pitting initiation was established and the equationof φb=φcb+H was obtained. The functional relations between induction time τ and α_(X~-) under various stationary applied potentials have been determined. The theory developed in the paper can explain many authors' experimental results, It is poossible for one to determine φcb practically.
收稿日期: 1988-04-25     

引用本文:

魏宝明;郝凌. 点蚀引发的热力学和动力学[J]. 中国腐蚀与防护学报, 1988, 8(2): 87-95.
. THERMODYNAMICS AND KINETICS OF PITTING INITIATION. J Chin Soc Corr Pro, 1988, 8(2): 87-95.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y1988/V8/I2/87

[1] Smialowska, S., and Czachor, M., Localized Corrion, Publized by NACE, 353(1974)
[2] Leckie, H. P., J. Electrochem. Soc., 117. 1152(1970)
[3] Hoar, T. P., et al., Nature, London, 216, 1299(1967)
[4] 查全性,电极过程动力学导论,科学出版社,1976,P.130
[5] 郭瑞金,火时中,中国腐蚀与防护学报,6(2) ,133(1986)
[6] Szklarska, Z., and Smialowska, S., Corrosion, 27, 223(1971)
[7] 夏村静夫,15(9) ,1(1971)
[8] Postlethwaite, J., et al., 同[1] , P. 415
[9] Touek, J., Werks. u Korr., 28, 619(1977)
[10] Vetter, K. J. and Strehblow, H. H., Ber. Bunsenges. Physik. Chem., 74, 445(1970)
[11] Strehblow, H. H., Dissertation, Freie Universitat Berlin, (1971)
[12] 加藤志刚等,电气制钢,45,112(1974)
[13] Leckie, H. P. and Uhlig, H. H., J. Electrochcm. Soc., 113, 1262(1966)
[14] 魏宝明等,南京化工学院学报,5(1) ,47(1983)
[15] 朱一帆等,南京化工学院学报,8(3) ,20(1986)
[16] 庞长国,不锈钢点蚀临界氯离子浓度的测定,学士论文,由朱一帆指导,南京化工学院腐蚀与防护专业,(1985)
[17] Rokurp Nishrmmra and Kiyokatsu kudo,第八届国际金属腐蚀会议论文集(上),兰州化机研究所,P.1(1981)
[18] Engell, H. J. and stlica, N. D., Arch. Eisenkiittenw., 30, 239(1959)
[19] Stolica, N. D., Corrosion Science, 9, 205(1969)
[20] Schwenk, W., Corrosion, 20, 129(1964)
[21] Weil, K. G. and Menzel, D., Zeitrchrift f. Elektrochemic, 63, 669(1959)
[22] Sultana Ciolac, Revue Roumaine de Chimie, 20(8) , 1057(1975)
[23] Engell, H. J., et al., 137, 1642(1961)
[24] Stolica, N. D., Corros. Sci., 9, 455(1969)
[25] Brauns, E. and Schwenk, W., Arch. Eisenkiittenw., 32, 387(1961)
[26] Schwek, W., Corros. Sci., 5, 245(1965)
[27] Herbsleb, G., Werkst. u korros., 17. 649(1966)
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