|
|
Investigation on AC-Induced Corrosion Behavior and Product Film of X70 Steel in Aqueous Environment with Various Ions |
Hui ZHANG, Yanxia DU(), Wei LI, Minxu LU |
Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
|
Cite this article:
Hui ZHANG, Yanxia DU, Wei LI, Minxu LU. Investigation on AC-Induced Corrosion Behavior and Product Film of X70 Steel in Aqueous Environment with Various Ions. Acta Metall Sin, 2017, 53(8): 975-982.
|
|
Abstract During the past decades, more buried oil or gas pipeline failures have been attributed to alternating current (AC) interference, and finally, those corrosion failures were investigated and the AC current density was identified as the critical influence parameter. There is general agreement on AC current density as a chief factor in determining metal wastage condition or assessing the AC corrosion risk for any type of soil in the presence of AC corrosion. Different degrees of AC corrosion may occurr if long distance pipelines pass through different kinds of soil environments, however, the effect of soil ions on pipeline steel without cathodic protection is still not well understood. Therefore, it is imperative to study the AC corrosion behaviors of pipeline steel in different soil environments. In the AC corrosion simulation experiment, by investigating the AC corrosion behaviors of X70 steel in 4 kinds of environmental media, the corrosion rates (Kd) were obtained, whose order was >>>. SEM, EDS and XRD were used to characterize and analyse the microscope morphologies, elements and phase compositions of the corrosion product films surfaces/cross-sections. Under the same AC current density, the reasons of differences of X70 steel's corrosion rate in different media were discussed. The presence of corrosive ions SO42- and Cl- would accelerate the corrosion rate, Na+ would not affect the formation of corrosion product film in NaCl and Na2SO4 solution media, however, the presence of Ca2+ and Mg2+ were helpful to form protective corrosion product films in MgCl2 and CaCl2 solution media.
|
Received: 19 December 2016
|
|
Fund: Supported by National Natural Science Foundation of China (No.51401017) and National Key Research and Development Program of China (Nos.2016YFC0802101 and 2016YFC0802103) |
[1] | Jiang Z T, Du Y X, Dong L, et al.Effect of AC current on corrosion potential of Q235 steel[J]. Acta Metall. Sin., 2011, 47: 997(姜子涛, 杜艳霞, 董亮等. 交流电对Q235钢腐蚀电位的影响规律研究[J]. 金属学报, 2011, 47: 997) | [2] | Wakelin R G, Sheldon C.Investigation and mitigation of AC corrosion on a 300 mm natural gas pipeline [A]. Corrosion 2004[C]. Houston, TX: NACE International, 2004: 205 | [3] | Gummow R A, Wakelin R G, Segall S M.AC corrosion——A new challenge to pipeline integrity [A]. Corrosion 1998[C]. San Diego, CA: NACE International, 1998: 566 | [4] | Floyd R.Testing and mitigation of AC corrosion on 8 Line: A field study [A]. Corrosion 2004[C]. Houston, TX: NACE International, 2004: 210 | [5] | Hanson H R, Smart J.AC corrosion on a pipeline located in a HVAC utility corridor [A]. Corrosion 2004[C]. Houston, TX: NACE International, 2004: 209 | [6] | Movley C.Pipeline corrosion from induced A.C. [A]. Corrosion 2005[C]. Houston, TX: NACE International, 2005: 132 | [7] | Jones D A.Effect of alternating current on corrosion of low alloy and carbon steels[J]. Corrosion, 1978, 34: 428 | [8] | Pookote S R, Chin D T.Effect of alternating current on the underground corrosion of steels[J]. Mater. Perform., 1978, 17(3): 9 | [9] | Collet E, Delores B, Gabillard M, et al.Corrosion due to AC influence of very high voltage power lines on polyethylene-coated steel pipelines: Evaluation of risks-preventive measures[J]. Anti-Corros. Methods Mater., 2001, 48(4): 221 | [10] | Pourbaix A, Carpentiers P, Gregoor R.Detection and assessment of alternating current corrosion[J]. Mater. Perform., 2000, 39(3): 34 | [11] | Goidanich S, Lazzari L, Ormellese M.AC corrosion. Part 2: Parameters influencing corrosion rate[J]. Corros. Sci., 2010, 52: 916 | [12] | Cao C N.Environmental Corrosion of Materials in China [M]. Beijing: Chemical Industrial Press, 2005: 373(曹楚南. 中国材料的自然环境腐蚀 [M]. 北京: 化学工业出版社, 2005: 373) | [13] | Torstensen A.AC corrosion on cathodically protected steel [D]. Trondheim: Norwegian University of Science and Technology, 2012 | [14] | Lilleby L.Effect of AC current on calcareous deposits [D]. Trondheim: Norwegian University of Science and Technology, 2009 | [15] | Prinz W.AC induced corrosion on cathodically protected pipelines[J]. UK Corro., 1992, 92: 1 | [16] | Helm G, Heim T, Heinzen H, et al.Investigation of corrosion of cathodically protected steel subjected to alternating currents[J]. 3R Int., 1993, 32: 246 | [17] | Fu A Q, Cheng Y F.Effects of alternating current on corrosion of a coated pipeline steel in a chloride-containing carbonate/bicarbonate solution[J]. Corros. Sci., 2010, 52: 612 | [18] | Yin K H, Tang M H, Xiong X J.Corrosion of buried steel structure under effect of electric field with industrial frequency[J]. J. Chin. Soc. Corros. Prot., 1982, 2(3): 33(尹可华, 唐明华, 熊祥键. 埋地钢构筑物在工频电场作用下的腐蚀[J]. 中国腐蚀与防护学报, 1982, 2(3): 33) | [19] | Yang Y. AC corrosion behavior and mechanism of X70 pipeline steel [D]. Qingdao: China University of Petroleum (East China), 2013(杨燕. X70钢交流腐蚀行为及机理研究 [D]. 青岛: 中国石油大学(华东), 2013) | [20] | Jüttner K, Reitz M, Sch?fer S, et al. Rotating ring-disk studies on the impact of superimposed large signal AC currents on the cathodic protection of steel [J]. Mater. Sci. Forum, 1998, 289-292: 107 | [21] | Smith D C, McEnaney B. The influence of dissolved oxygen concentration on the corrosion of grey cast iron in water at 50 ℃[J]. Corros. Sci., 1979, 19: 391 | [22] | Raman A, Nasrazadani S, Sharma L.Morphology of rust phases formed on weathering steels in various laboratory corrosion tests[J]. Metallography, 1989, 22: 79 | [23] | Majzlan J, Mazeina L, Navrotsky A.Enthalpy of water adsorption and surface enthalpy of lepidocrocite (γ-FeOOH)[J]. Geochim. Cosmochim. Acta, 2007, 71: 615 | [24] | Misawa T, Asami K, Hashimoto K, et al.The mechanism of atmospheric rusting and the protective amorphous rust on low alloy steel[J]. Corros. Sci., 1974, 14: 279 | [25] | Sun M, Xiao K, Dong C F, et al.Electrochemical behaviors of ultra high strength steels with corrosion products[J]. Acta Metall. Sin., 2011, 47: 442(孙敏, 肖葵, 董超芳等. 带腐蚀产物超高强度钢的电化学行为[J]. 金属学报, 2011, 47: 442) | [26] | Liu W X, Sun C.Effects of different cathodic ions on the corrosion of carbon steel in soils[J]. Total Corros. Control, 2006, 20(6): 10(刘文霞, 孙成. 土壤中阴离子对碳钢腐蚀的影响[J]. 全面腐蚀控制, 2006, 20(6): 10) | [27] | Xie Y, Li Y, Sun T, et al.Study of the protective property of in-situ pure γ-FeOOH and α-FeOOH corrosion product film on Q235 steel[J]. Chin. Sci. Bull., 2008, 53: 2848(谢颖, 李瑛, 孙挺等. 原位生长的纯γ-FeOOH和α-FeOOH锈膜对Q235钢保护性能的研究[J]. 科学通报, 2008, 53: 2848) | [28] | Lin J P, Ellaway M, Adrien R.Study of corrosion material accumulated on the inner wall of steel water pipe[J]. Corros. Sci., 2001, 43: 2065 | [29] | Zhao G X, Chen C F, Lu M X, et al.The formation of product scale and mass transfer channels during CO2 corrosion[J]. J. Chin. Soc. Corros. Prot., 2002, 22: 363(赵国仙, 陈长风, 路民旭等. CO2腐蚀的产物膜及膜中物质交换通道的形成[J]. 中国腐蚀与防护学报, 2002, 22: 363) |
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|