20号钢在HCl-H2S-H2O溶液中的腐蚀行为
Corrosion Behavior of 20 Steel in a Solution Containing Hydrogen Sulfide and Hydrochloric Acid
摘 要
利用极化曲线和电化学阻抗, 结合扫描电镜和能谱分析, 对20号钢在90 ℃ HCl-H2S-H2O溶液中的腐蚀行为进行了研究。结果表明, 当溶液中存在H2S时, 电极表面形成的FeS 膜对HCl的侵蚀具有一定的阻碍作用; 随H2S浓度的增加, 膜电阻、电荷转移电阻逐渐减小, 说明膜的致密性下降, 腐蚀加重; 当溶液中HCl较高时, FeS膜出现脱落现象, 且随着HCl浓度的增加, 膜的致密性逐渐降低, 保护作用下降, 导致腐蚀速率增加。
硫化氢
氯化氢
corrosion
H2S
HCl
Abstract
Corrosion behavior of 20 steel was studied in a solution containing hydrogen sulfide and hydrochloric acid at 90 ℃. The results showed that FeS film formed firstly during the experiment when the solution contained hydrogen sulfide, then the film obstructed corrosion caused by hydrochloric acid. With increasing the hydrogen sulfide content, the resistance of corrosion product film and the charge transfer impedance decreased, indicating that the film density decreased and corrosion increased. In the solutions with relatively high concentrations of hydrochloric acid the film became loose and with the increase of content of the acid the density and the protection of the film declined and the corrosion rate increased.
中图分类号 TG172.6
所属栏目 试验研究
基金项目 中石油科研项目(2008D-4706)
收稿日期 2010/8/4
修改稿日期 2010/8/27
网络出版日期
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引用该论文: LIU Liang,MIU Lei,HAN Ji-cheng. Corrosion Behavior of 20 Steel in a Solution Containing Hydrogen Sulfide and Hydrochloric Acid[J]. Corrosion & Protection, 2011, 32(6): 417
被引情况:
【1】刘良,吴佳, "5 Mt/a常减压装置常顶空冷出口集合管腐蚀泄漏原因及防腐蚀建议",腐蚀与防护 34, 1153-1157(2013)
【2】尤新华,王亦成,李小东,杨丽燕, "原油劣质化对常减压装置的影响和应对措施",腐蚀与防护 36, 788-791(2015)
【3】徐士祺, "温度对油田注水管道内电化学腐蚀的影响",腐蚀与防护 36, 226-229(2015)
【4】杨明,马晓勇,龙云,赵大伟,张晓雷,陈武, "碳钢在湿硫化氢环境中的应力导向氢致开裂行为",腐蚀与防护 35, 1226-1229(2014)
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参考文献
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【3】杨怀玉, 陈家坚, 曹楚南, 等. H2S水溶液中的腐蚀与缓蚀作用机理的研究Ⅳ[J]. 中国腐蚀与防护学报, 2000, 20(5):287-292.
【4】Amin M A, Abd El-Rehim S S, El-Sherbini E E F, et al. The inhibition of low carbon steel corrosion in hydrochloric acid solutions by succinic acid Part I. Weight loss, Polarization, EIS, PZC, EDX and SEM studies[J]. Electrochim. Acta, 2007, 52:3588-3600.
【5】Ren C Q, Liu D X, Bai Z Q, et al. Corrosion behavior of oil tube steel in simulant solution with hydrogen sulfide and carbon dioxide[J]. Materials Chemistry and Physics, 2005, 93:305-309.
【6】周卫军, 严密林, 王成达. N80抗硫油管钢在含CO2、微量H2S及高浓度Cl-腐蚀介质中的腐蚀行为[J]. 腐蚀科学与防护技术, 2007, 19(3): 192-195.
【7】Ma H Y, Cheng X Y, Li G, et al. The influence of hydrogen sulfide on corrosion of iron under different conditions[J]. Corros. Sci, 2000, 42:1669-1683.
【8】徐海升, 李谦定, 薛岗林, 等. N80油管钢在CO2/H2S水介质中的腐蚀研究[J]. 材料保护, 2009, 42(7): 59-62.
【2】Veloz M A, González I. Electrochemical study of carbon steel corrosion in buffered acetic acid solutions with chlorides and H2S[J]. Electrochimica Acta, 2002, 48:135-144.
【3】杨怀玉, 陈家坚, 曹楚南, 等. H2S水溶液中的腐蚀与缓蚀作用机理的研究Ⅳ[J]. 中国腐蚀与防护学报, 2000, 20(5):287-292.
【4】Amin M A, Abd El-Rehim S S, El-Sherbini E E F, et al. The inhibition of low carbon steel corrosion in hydrochloric acid solutions by succinic acid Part I. Weight loss, Polarization, EIS, PZC, EDX and SEM studies[J]. Electrochim. Acta, 2007, 52:3588-3600.
【5】Ren C Q, Liu D X, Bai Z Q, et al. Corrosion behavior of oil tube steel in simulant solution with hydrogen sulfide and carbon dioxide[J]. Materials Chemistry and Physics, 2005, 93:305-309.
【6】周卫军, 严密林, 王成达. N80抗硫油管钢在含CO2、微量H2S及高浓度Cl-腐蚀介质中的腐蚀行为[J]. 腐蚀科学与防护技术, 2007, 19(3): 192-195.
【7】Ma H Y, Cheng X Y, Li G, et al. The influence of hydrogen sulfide on corrosion of iron under different conditions[J]. Corros. Sci, 2000, 42:1669-1683.
【8】徐海升, 李谦定, 薛岗林, 等. N80油管钢在CO2/H2S水介质中的腐蚀研究[J]. 材料保护, 2009, 42(7): 59-62.
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