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| A MECHANISM OF REANODIZING POROUS ANODIC FILMS ON ALUMINIUM IN (NH_4)_2MoS_4 AQUEOUS SOLUTION Ⅱ. MATHEMATtC MODEL OF THE CRITICAL H~+ CONCENTRATION |
| Liu Haiping. Xu Yuan and Zkang Wenqi (University of Scieoce & Technology Beijing) |
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Abstract It is proposed that a critical concentration of hydrogen ion in pores of the anodic film exists, above which the film material at pore bases dissolves during reanodizing process. A formula on the critical hydrogen ion concentration is derived, based on ion diffusion model.Good agreement is reached between the experimental results and the theoretical predictions from the formula.The improved sample preparation technique in ultramicrotomed sectioning used in this work, allowed direct observation of pore bases of thick porous films(20～30μm) in TEM. Morphological features of the microstructure of the film and the deposited loose molybdenum sulphide are described.
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Received: 25 April 1990
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Cite this article:
Liu Haiping. Xu Yuan and Zkang Wenqi (University of Scieoce & Technology Beijing). A MECHANISM OF REANODIZING POROUS ANODIC FILMS ON ALUMINIUM IN (NH_4)_2MoS_4 AQUEOUS SOLUTION Ⅱ. MATHEMATtC MODEL OF THE CRITICAL H~+ CONCENTRATION. J Chin Soc Corr Pro, 1990, 10(2): 97-108.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1990/V10/I2/97
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[1] Bockris, John O'.M., and Reddy, Amulya K.N., Modern Electrochemistry., Vol.2, London, Macdonald (1970) .
[2] 北京钢铁学院腐蚀工程系,“腐蚀电化学”,(自编教材)(1983)
[3] 刘海平、徐源、张文奇,中国腐蚀与防护学报,10(2) ,89(1990)
[4] 田昭武,电化学研究方法,科学出版社(1984)
[5] Alvey.C.E., Ph.D.Thesis UMIST(1974)
[6] O'Sullivan.J.P.and Wood.G.C., Proc.Roy.Soc, A317, 511(1970)
[7] Dorsey.G.A., J.Electrochem.Soc., 117, 1181 (1970)
[8] Wood.G.C., In "Oxide and oxide films", Ed, Diqqle.J.W., Vol.2, P167-269,Dekker, New York (1973)
[9] Skeldon.P. Thompson.G.E.and Wood.G.C., Thin Solid Films., 148,333 (1987) |
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