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唐娴等:S0~对含C~溶液中316L奥氏体不锈钢钝化行为及点蚀行为的影响 ·371· (a 000104m 50 gm d s日20WwD10mms0 x1.0o010m SEI 20KV %10mm550 图8不同S0质量浓度环境下316L不锈钢恒电流极化后的点蚀形貌.(a)0:(b)2500mgL1:(c)5000mgL1:(d)10000mgL1 Fig.8 Pitting morphologies of 316L stainless steel after galvanostatic polarization at different SO mass concentrations:(a)0:(b)2500 mgL; (c)5000mgL-1:(d)10000mgL-l 蚀形成后会使蚀坑形态更加复杂. B]Hu X M,Neville A.CO,erosion-corrosion of pipeline steel (API X65)in oil and gas conditions-a systematic approach.Wear, 3结论 2009,267(11):2027 [4]Sun L,Hou Y H,Yang X,et al.Effect of chlorine ion and sulfur (1)动电位极化测试结果表明,随着SO?浓度 ion on corrosion of 316L stainless steel and Monel alloy in oil refi- 的增加,316L不锈钢的点蚀电位升高,维钝电流密 ning process.Surf Technol,2015,44(12):41 度降低,耐点蚀能力提高.交流阻抗测试结果表明, (孙亮,侯艳宏,杨席,等炼油加工过程中氯离子与硫离子 随着$0}~浓度的增加,316L不锈钢的钝化膜电阻 对316L不锈钢和Mond合金腐蚀的影响.表面技术,2015, 44(12):41) 变大,保护性变好 5] Chen Y.Overview on corrosion and prevention of distillation units (2)恒电位极化测试结果表明,S0的加入能 overhead.Total Corros Control,2011,25(8):10 够将在含C~溶液中有点蚀风险的316L不锈钢维 (陈洋。常减压装置塔顶系统腐蚀与控制技术现状.全面腐蚀 持在钝化区,或者减小腐蚀速率. 控制,2011,25(8):10) (3)动电位极化和恒电流极化后试样的扫描电 Al-Sulaiman S,Al-Shamari A,Al-Mithin A,et al.Assessing the possibility of hydrogen damage in crude oil processing equipment 镜结果表明,在点蚀形成后,随着SO:浓度的增 /NACE Corrosion 2010.San Antonio,2010:10176 加,316L不锈钢的局部点蚀形态更为复杂,蚀坑的 Lu S Y.Introduction to Stainless Steel.Beijing:Chemical Industry 周长面积比明显增大 Press,2013 (陆世英.不锈钢概论.北京:化学工业出版社,2013) 参考文献 [8]He W,Knudsen 0,Diplas S.Corrosion of stainless steel 316L in simulated formation water environment with CO2-HS-Cl- 1]Lu Q M.Corrosion and Protection in the Oil Industry.Beijing: Corros Sci,2009,51(12):2811 Chemical Industry Press,2001 [9]Shi Y H,Yu Y,Liang P,et al.Corrosion behavior of 316L auste- (卢绮敏.石油工业中的腐蚀与防护.北京:化学工业出版 nitic stainless steel in solutions containing chloride ions.Mater 社,2001) Pro,2015,48(8):29 Wang QY,Wang X Z,Luo H,et al.A study on corrosion behav- (史艳华,于洋,梁平,等.316L不锈钢在氯离子环境中的腐 iors of Ni-Cr-Mo laser coating,316 stainless steel and X70 steel 蚀行为.材料保护,2015,48(8):29) in simulated solutions with H2S and CO2.Surf Coat Technol, [10]El Sherbini EE F.El Rehim S S A.Pitting corrosion of zinc in 2016,291:250 NaSOa,solutions and the effect of some inorganic inhibitors.唐 娴等: SO2 - 4 对含 Cl - 溶液中 316L 奥氏体不锈钢钝化行为及点蚀行为的影响 图 8 不同 SO2 - 4 质量浓度环境下 316L 不锈钢恒电流极化后的点蚀形貌 . ( a) 0; ( b) 2500 mg·L - 1 ; ( c) 5000 mg·L - 1 ; ( d) 10000 mg·L - 1 Fig. 8 Pitting morphologies of 316L stainless steel after galvanostatic polarization at different SO2 - 4 mass concentrations: ( a) 0; ( b) 2500 mg·L - 1 ; ( c) 5000 mg·L - 1 ; ( d) 10000 mg·L - 1 蚀形成后会使蚀坑形态更加复杂. 3 结论 ( 1) 动电位极化测试结果表明,随着 SO2 - 4 浓度 的增加,316L 不锈钢的点蚀电位升高,维钝电流密 度降低,耐点蚀能力提高. 交流阻抗测试结果表明, 随着 SO2 - 4 浓度的增加,316L 不锈钢的钝化膜电阻 变大,保护性变好. ( 2) 恒电位极化测试结果表明,SO2 - 4 的加入能 够将在含 Cl - 溶液中有点蚀风险的 316L 不锈钢维 持在钝化区,或者减小腐蚀速率. ( 3) 动电位极化和恒电流极化后试样的扫描电 镜结果表明,在点蚀形成后,随着 SO2 - 4 浓度的增 加,316L 不锈钢的局部点蚀形态更为复杂,蚀坑的 周长面积比明显增大. 参 考 文 献 [1] Lu Q M. Corrosion and Protection in the Oil Industry. Beijing: Chemical Industry Press,2001 ( 卢绮敏. 石油工业中的腐蚀与防护. 北京: 化学工业出版 社,2001) [2] Wang Q Y,Wang X Z,Luo H,et al. A study on corrosion behav￾iors of Ni--Cr--Mo laser coating,316 stainless steel and X70 steel in simulated solutions with H2 S and CO2 . Surf Coat Technol, 2016,291: 250 [3] Hu X M,Neville A. CO2 erosion-corrosion of pipeline steel ( API X65) in oil and gas conditions———a systematic approach. Wear, 2009,267( 11) : 2027 [4] Sun L,Hou Y H,Yang X,et al. Effect of chlorine ion and sulfur ion on corrosion of 316L stainless steel and Monel alloy in oil refi￾ning process. Surf Technol,2015,44( 12) : 41 ( 孙亮,侯艳宏,杨席,等. 炼油加工过程中氯离子与硫离子 对 316L 不锈钢和 Monel 合金腐蚀的影响. 表面技术,2015, 44( 12) : 41) [5] Chen Y. Overview on corrosion and prevention of distillation units overhead. Total Corros Control,2011,25( 8) : 10 ( 陈洋. 常减压装置塔顶系统腐蚀与控制技术现状. 全面腐蚀 控制,2011,25( 8) : 10) [6] Al-Sulaiman S,Al-Shamari A,Al-Mithin A,et al. Assessing the possibility of hydrogen damage in crude oil processing equipment / / NACE Corrosion 2010. San Antonio,2010: 10176 [7] Lu S Y. Introduction to Stainless Steel. Beijing: Chemical Industry Press,2013 ( 陆世英. 不锈钢概论. 北京: 化学工业出版社,2013) [8] He W,Knudsen O ,Diplas S. Corrosion of stainless steel 316L in simulated formation water environment with CO2 --H2 S--Cl - . Corros Sci,2009,51( 12) : 2811 [9] Shi Y H,Yu Y,Liang P,et al. Corrosion behavior of 316L auste￾nitic stainless steel in solutions containing chloride ions. Mater Prot,2015,48( 8) : 29 ( 史艳华,于洋,梁平,等. 316L 不锈钢在氯离子环境中的腐 蚀行为. 材料保护,2015,48( 8) : 29) [10] El Sherbini E E F,El Rehim S S A. Pitting corrosion of zinc in Na2 SO4,solutions and the effect of some inorganic inhibitors. · 173 ·
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