Cr13钢在含饱和CO2介质中腐蚀的影响因素
Influencing Factors of Corrosion Rate of Cr13 Steel in CO2 Saturated Solution
摘 要
利用极化曲线和失重法, 研究了H2S、Cl-、温度等因素对Cr13钢在饱和CO2介质中腐蚀行为的影响。试验表明, 在50 ℃、Cl-浓度为50 g/L时, 随溶液中H2S含量增加, Cr13钢自腐蚀电流密度增大, 钢的腐蚀速率上升, 腐蚀受阴极浓差极化控制。50 ℃, H2S浓度为0.06 mol/L时, 当Cl-浓度低于50 g/L时, 随着Cl-浓度增加, Cr13钢腐蚀速率上升;当Cl-浓度高于50 g/L时, 随Cl-浓度增加, Cr13钢的腐蚀速率下降。在H2S浓度为0.06 mol/L, Cl-浓度为50 g/L时, 随温度升高, Cr13钢腐蚀速率增加。
极化曲线
失重法
H2S浓度
Cl-浓度
温度
H2S/CO2 corrosion
polarization curve
weight loss method
H2S concentration
Cl- concentration
temperature
Abstract
Effects of Cl- concentration, H2S concentration and temperature in the CO2 saturated solution on the corrosion rate of Cr13 steel were studied by potentiodynamic polarization and weight loss method. The results showed that, the corrosion rate and corrosion current density of Cr13 steel at 50 ℃ increased with increasing the H2S content in solution with 50 g/L Cl-. And, at 50 ℃ and in H2S concentration of 0.06 mol/L, when Cl- concentration was below 50 g/L, the corrosion rate increased with increasing the concentration of Cl-. When the concentration of Cl- was above 50 g/L, the corrosion rate decreased with increasing the Cl- concentration. When of the concentration H2S and Cl- was 0.06 mol/L and 50 g/L respectively, the corrosion rate increased with increasing temperature.
中图分类号 TG172.3
所属栏目 试验研究
基金项目
收稿日期 2010/3/8
修改稿日期 2010/4/3
网络出版日期
作者单位点击查看
备注熊金平,博士,副教授,
引用该论文: GE Cai-gang,XIONG Jin-ping,ZHAO Yong-feng,TANG Yi-ming,ZHAO Xu-hui,ZUO Yu. Influencing Factors of Corrosion Rate of Cr13 Steel in CO2 Saturated Solution[J]. Corrosion & Protection, 2011, 32(1): 33
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参考文献
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【11】白真权, 李鹤林, 刘道新, 等. 模拟油田H2S/CO2环境中N80钢的腐蚀及影响因素研究[J]. 材料保护, 2003, 36(4): 8-10.
【2】张忠铧, 孙中渠, 黄子阳, 等. 经济型抗CO2腐蚀油套管用低合金钢的研究[J]. 宝钢技术, 2004(4): 37-40.
【3】张忠铧, 黄子阳, 孙元宁, 等. 3Cr抗CO2和H2S腐蚀系列油套管开发[J]. 宝钢技术, 2006(3): 5-8, 59.
【4】吕祥鸿, 赵国仙, 杨延清, 等. 13Cr钢高温高压CO2腐蚀电化学特性研究[J]. 材料工程, 2004(10): 16-20.
【5】Dmitry Sidorin, Derek Pletcher, Bill Hedges. The electrochemistry of 13% chromium stainless steel in oilfield brines[J]. Electrochimica Acta, 2005, 50(20): 4109-4116.
【6】Wu S L,Cui Z D,Zhao G X,et al. EIS study of the surface film on the surface of carbon steel from supercritical carbon dioxide corrosion[J]. Applied Surface Science, 2004, 228: 17-25.
【7】Lopez D A,Perez T,Simison S N. The influence of microstructure and chemical composition of carbon and low alloy steels in CO2 corrosion a state-of-the-art appraisal[J]. Materials and Design, 2003, 24(8): 561-575.
【8】吕祥鸿, 许文研. 模拟油田环境中P110钢的CO2腐蚀行为[J]. 材料科学与工程学报, 2008, 26(4): 535-539.
【9】李国敏, 刘烈伟, 郑家燊. 碳钢在含硫化氢及高压二氧化碳饱和的NaCl溶液中的腐蚀行为[J]. 中国腐蚀与防护学报, 2000, 20(4): 204-209.
【10】张雷, 国大鹏, 路民旭. Cl-含量对J55钢CO2腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2009, 29(1): 64-68.
【11】白真权, 李鹤林, 刘道新, 等. 模拟油田H2S/CO2环境中N80钢的腐蚀及影响因素研究[J]. 材料保护, 2003, 36(4): 8-10.
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