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| ELECTROCHEMICAL CHARACTERIZATION OF PASSIVE FILM FORMED UNDER DIFFERENT POTENTIAL CONDITION ON X70 PIPELINE STEEL IN NaHCO3 SOLUTION |
| JIA Zhijun, LI Xiaogang, LIANG Ping, WANG Liwei |
| Advanced Material & Technology Institute, University of Science and Technology Beijing, Beijing 100083 |
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Abstract The passive behavior and electrochemical characterization of passive film formed under different potential on X70 pipeline steel in NaHCO3 solution were discussed by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and capacitance measurements. It is shown that the X70 pipeline steel has a wide passive anodic region between -50 mV to 900 mV. EIS result indicates that the passive film is much denser and uniform with the increasing potential. Mott-Schottky analysis presents that the passive films on X70 pipeline steel in 0.5 mol?L-1 NaHCO3 solution exhibits n-type semiconductive character in potential region of -0.2 V to 0.8 V. The donor density of the passive film decreases and the thickness of the space-charge layers increases with the increasing potential. The corrosion resistance of the passive film increases with the forming potential.
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Received: 16 February 2009
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Corresponding Authors:
LI Xiaogang
E-mail: lixiaogang99@263.net
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| [1] |
Li D G, Zhu J W, Zheng M S, et al.Photo-electrochemical characterization of passive film formed on X80 pipeline steel [J]. Acta Metall. Sin., 2008, 44(6): 739-744 |
| [2] |
(李党国,朱杰武,郑茂盛等,X80管线钢钝化膜的光电化学性能 [J]. 金属学报, 2008,44(6):739-744) |
| [3] |
Liang P, Li X G, Du C W, et al. Influence of chloride ions on the corrosion resistance of X80 pipeline steel in NaHCO3 solution [J]. J. Univ. Sci. Technol.Beijing, 2008, 30(7): 735-739 |
| [4] |
(梁平，李晓刚，杜翠微等，Cl-对X80管线钢在NaHCO3溶液中腐蚀性为的影响 [J]. 北京科技大学学报，2008，30（7）：735-739) |
| [5] |
Li D G, Feng Y R, Bai Z Q, et al. Calculation of diffusivity of point defects in passive film formed on X80 pipeline steel [J]. Chin.J Appl. Chem., 2008, 25(9): 1007-1010 |
| [6] |
(李党国，冯耀荣，白真权等，X80管线钢钝化膜内点缺陷扩散系数的计算 [J].应用化学，2008, 25（9）：1007-1010) |
| [7] |
Cheng Y F, Luo J L. A comparison of the pitting susceptibility and semiconducting properties of the passive films on carbon steel in chromate and bicarbonate solutions [J]. Appl. Surf. Sci, 2000, 167(1-2):113-121 |
| [8] |
Cheng Y F, Luo J L. Electronic structure and pitting susceptibility of passive film on carbon steel [J]. Electrochim. Acta, 44(17): 2947-2957 |
| [9] |
Glass G K, Hassanein A M, Buenfeld N R. Obtaining impedance information on the steel-concrete interface [J]. Corrosion, 1998, 54(11):887-897 |
| [10] |
Cheng Y F, Luo J L. Passivity and pitting of carbon steel in chromate solutions [J]. Electrochim. Acta, 1999, 44(26):4795-2804 |
| [11] |
Arutunow A, Darowicki K. DEIS assessment of AISI 304 stainless steel dissolution process in conditions of intergranular corrosion [J]. Electrochim. Acta, 2008, 53(13):4387-4395 |
| [12] |
Krakowiak S, Darowicki K, Slepski P. Impedance investigation of passive 304 stainless steel in the pit pre-initiation state [J]. Electrochim. Acta, 2005, 50(13):2699-2704 |
| [13] |
Alves V A, Brett C M A. Characterisation of passive films formed on mild steels in bicarbonate solution by EIS [J]. Electrochim. Acta, 2002, 47(13-14):2081-2091 |
| [14] |
Sikora J, Sikora E, MacDonald D D. The electronic structure of the passive film on tungsten [J]. Electrochim. Acta, 2000, 45(12):1875-1883 |
| [15] |
Rangel C M, Silva T M, Da Cunha Belo M. Semiconductor electrochemistry approach to passivity and stress corrosion cracking susceptibility of stainless steels [J]. Electrochim. Acta, 2005, 50(25-26):5076-5082 |
| [16] |
Zeng Y M, Luo J L, Norton P R. A study of semiconducting properties of hydrogen containing passive films [J]. Thin Solid Films, 2004, 460(1-2):116-124 |
| [17] |
Ningshen S, Kamachi Mudali U, Mittal V K, et al. Semiconducting and passive film properties of nitrogen-containing type 316LN stainless steels [J]. Corros. Sci, 2007, 49(1):481-496 |
| [18] |
Hamadou L, Kadri A, Benbrahim N. Characterization of passive films formed on low carbon steel in borate buffer solution (pH 92) by electrochemical impedance spectroscopy [J]. Appl. Surf. Sci, 2005, 252(5):1510-1519 |
| [19] |
Rangel C M, Silva T M, Da Cunha Belo M. Semiconductor electrochemistry approach to passivity and stress corrosion cracking susceptibility of stainless steels [J]. Electrochim. Acta, 2005, 50 (25-26):5076-5082 |
| [20] |
Zeng Y M, Luo J L, Norton P R. A study of semiconducting properties of hydrogen containing passive films [J]. Thin Solid Films, 2004, 460(1-2):116-124 |
| [21] |
Ningshen S, Kamachi M U, Mittal V K, et al. Semiconducting and passive film properties of nitrogen-containing type 316LN stainless steels [J]. Corros. Sci, 2007, 49(1):481-496 |
| [22] |
Gercasi C A, Folquer M E, Vallejo A E, et al. Electron transfer across anodic films formed on tin in carbonate-bicarbonate buffer solution [J]. Electrochim.Acta, 2005, 50(5):1113-1119 |
| [23] |
Zeng Y M, Luo J L. Electronic band structure of passive film on X70 pipeline steel [J]. Electrochim.Acta, 2003, 48(23):3551-3562 |
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