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金属学报  2014 

埋地管线阴极保护屏蔽剥离涂层下薄液腐蚀环境特征及演化

DOI: 10.11900/0412.1961.2014.00156, PP. 1137-1145

Keywords: 管线钢,土壤腐蚀,3PE防腐层,阴极保护,薄液膜,应力腐蚀开裂(SCC)

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Abstract:

构建了埋地管线表面剥离高绝缘性聚乙烯(PE)涂层下模拟缝隙实验装置,采用微电极技术研究阴极保护(CP)水平和环境气氛(CO2和O2)条件下剥离涂层下缝隙薄液电化学环境(电位和溶液pH值等)特征及其演化规律,探讨剥离涂层下近中性pH环境存在条件.结果表明,不同阴极保护水平和CO2分压条件下,剥离涂层下可出现近中性到高pH值各种薄液环境.高阴极保护电流使管表产生并维持高pH环境;大面积剥离、阴极保护屏蔽或缺失和CO2的缓冲作用可使剥离涂层下封存近中性pH应力腐蚀开裂(SCC)敏感薄液环境;由剥离涂层下缝隙薄液pH值可判断剥离涂层下阴极保护有效性及其屏蔽程度.

References

[1]  Sheng G J, Chen H Y, Xue Z Y, Zhao J. Corros Sci Prot Technol, 2013; 25: 246 (沈光霁, 陈洪源, 薛致远, 赵 君. 腐蚀科学与防护技术, 2013; 25: 246)
[2]  Tang Y P, Yan R J, Huang Z Y, Li J X, Wang L. Mater Prot, 2011; 44(12): 45 (唐谊平, 晏荣军, 黄子阳, 李建新, 王 琍. 材料保护, 2011; 44(12): 45)
[3]  Song F M, Kirk D W, Graydon J W, Cormack D E, Wong D. Mater Perform, 2003; 42: 24
[4]  Nazarbeygi A E, Moeini A R. Mater Perform, 2009; 48: 32
[5]  Argent C, Norman D. Corrosion' 2005, Houston, TX: NACE, 2005: Paper 05034 (CD)
[6]  Hughes C, Norsworthy R. Corrosion' 2009, Houston, TX: NACE International, 2009: Paper 09043 (CD)
[7]  Yan M C, Weng Y J. J Chin Soc Corros Prot, 2004; 24: 95 (闫茂成, 翁永基. 中国腐蚀与防护学报, 2004; 24: 95)
[8]  Zhang Y Y, Han W L, Li A G, Shao H Q, Xie B B. Corros Prot, 2010; 31: 787 (张盈盈, 韩文礼, 李爱贵, 邵怀启, 解蓓蓓. 腐蚀与防护, 2010; 31: 787)
[9]  Xu J, Sun C, Yan M C, Wang F H. Mater Chem Phys, 2013; 142: 692
[10]  Fang B Y, Han E H, Wang J Q, Ke W. Corros Eng Sci Technol, 2007; 42: 123
[11]  Song F M. Corros Sci, 2012; 55: 107
[12]  Wang Z Y, Wang J Q, Han E-H, Ke W, Yan M C, Zhang J W, Liu C W. Acta Metall Sin, 2012; 48: 1267 (王志英, 王俭秋, 韩恩厚, 柯 伟,?闫茂成, 张峻巍, 刘楚威. 金属学报, 2012; 48: 1267)
[13]  Zhao B, Du C W, Liu Z Y, Li X G, Yang J K, Li Y Q. Acta Metall Sin, 2012; 48: 1530 (赵 博, 杜翠薇, 刘智勇, 李晓刚, 杨吉可, 李月强. 金属学报, 2012; 48: 1530)
[14]  Parkins R N. Corrosion' 2000, Houston, TX: NACE, 2000: Paper 363 (CD)
[15]  Eslami A, Fang B, Kania R, Worthingham B, Been J, Eadie R, Chen W. Corros Sci, 2010; 52: 3750
[16]  Martyn W, Brian E, Tom J, Robert W. Proceedings of the 1998 International Pipeline Conference, IPC. Part 1, New York: ASME, 1998: 399
[17]  Perdomo J J, Song I. Corros Sci, 2000; 42: 1389
[18]  Fessler R R, Markworth A J, Parkins R N. Corrosion, 1983; 39: 20
[19]  Li Z F, Gan F X, Mao X H. Corros Sci, 2002; 44: 689
[20]  Yan M C, Weng Y J. J Chin Soc Corros Prot, 2005; 25: 34 (闫茂成, 翁永基. 中国腐蚀与防护学报, 2005; 25: 34)
[21]  Yan M C, Wang J Q, Han E H, Ke W. Corros Eng Sci Technol, 2007; 42: 42
[22]  Yan M C, Wang J Q, Ke W, Han E-H. J Chin Soc Corros Prot, 2007; 27: 257 (闫茂成, 王俭秋, 柯 伟, 韩恩厚. 中国腐蚀与防护学报, 2007; 27: 257)
[23]  Yan M C, Wang J Q, Han E-H, Ke W. Corros Sci, 2008; 50: 1331
[24]  Song F M. Corrosion, 2010; 66: 095004-095004-14
[25]  Charles E A, Parkins R N. Corrosion, 1995; 51: 518
[26]  Chen X, Li X G, Du C W, Cheng Y F. Corros Sci, 2009; 51: 2242
[27]  Yan M C, Sun C, Xu J, Dong J H, Ke W. Corros Sci, 2014; 80: 309
[28]  Eslami A, Kania R, Worthingham B, Boven G V, Eadie R, Chen W. Corrosion, 2013; 69: 1103

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