HCO_3~-对X100管线钢在海洋环境中电化学腐蚀行为影响
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摘要
海洋环境中油气管线钢腐蚀是破坏油气管线完整性的重要因素之一。在模拟海洋溶液中,采用动电位极化和交流阻抗技术研究了不同HCO_3~-浓度对X100钢的电化学腐蚀行为影响。结果表明,HCO_3~-浓度在2.5×10-3～0.5 mol/L,随HCO_3~-浓度的升高,X100钢腐蚀电流密度随之增大,且金属表面腐蚀坑的数量和面积不断增加;此外,当HCO_3~-浓度为0.1、0.5 mol/L时,X100钢阳极极化曲线出现了过渡钝化区,金属表面形成了不稳定产物膜。
Corrosion of oil and gas pipeline steel in the marine environment is one of the important factors that damage the integrity of oil and gas pipelines. The effects of different HCO_3~- concentrations in simulated ocean solution on the electrochemical corrosion behavior of X100 steel were investigated by using potentiodynamic polarization and AC impedance technique. The results showed that the corrosion current density, the corrosion pits number and area of X100 steel increased with increasing of HCO_3~- ion concentration. In addition, when HCO_3~- concentration was 0.1 and 0.5 mol/L, transition passivation zone appeared in the anodic polarization curve of X100 steel, and unstable product film was formed on the metal surface.
Corrosion of oil and gas pipeline steel in the marine environment is one of the important factors that damage the integrity of oil and gas pipelines. The effects of different HCO_3~- concentrations in simulated ocean solution on the electrochemical corrosion behavior of X100 steel were investigated by using potentiodynamic polarization and AC impedance technique. The results showed that the corrosion current density, the corrosion pits number and area of X100 steel increased with increasing of HCO_3~- ion concentration. In addition, when HCO_3~- concentration was 0.1 and 0.5 mol/L, transition passivation zone appeared in the anodic polarization curve of X100 steel, and unstable product film was formed on the metal surface.
引文
[1] Speight J G. Handbook of offshore oil and gas operations[M]. Oxford,UK:Elsevier,2015.
[2]董美,吴明. X80管线钢在模拟液中的电化学行为[J].石油化工高等学校学报,2009,22(2):6669.Dong M,Wu M. Electrochemical behavior in Chinese typical simulated soil solutions of X80 pipeline steel[J]. Journal of Petrochemical Universities,2009,22(2):6669.
[3] Wright R F,Brand E R,ZiomekMoroz M,et al. Effect of HCO3-on electrochemical kinetics of carbon steel corrosion in CO2saturated brines[J]. Electrochimica Acta,2018,290:626638.
[4]王红红,刘国恒.中国海油海底管道事故统计及分析[J].中国海上油气,2017,29(5):157160.Wang H H,Liu G H. Statistics and analysis of subsea pipeline accidents of CNOOC[J]. China Offshore Oil and Gas,2017,29(5):157160.
[5] Bhandari J,Khan F,Abbassi R,et al. Modelling of pitting corrosion in marine and offshore steel structures-A technical review[J]. Journal of Loss Prevention in the Process Industries,2015,37:3962.
[6] Alcántara J,Fuente D D L,Chico B,et al. Marine atmospheric corrosion of carbon steel:A Review[J]. Materials,2017,10(4):406.
[7]陈旭,何川,刘硕,等.应力对X70钢在NaHCO3溶液中腐蚀行为的影响[J].石油化工高等学校学报,2011,24(5):6972.Chen X,He C,Liu S,et al. Effect of stress on corrosion behaviors of X70 steel in NaHCO3solution[J] Journal of Petrochemical Universities,2011,24(5):6972.
[8] Eliyan F F,Alfantazi A. Influence of temperature on the corrosion behavior of APIX100 pipeline steel in 1bar CO2HCO-3solutions:An electrochemical study[J]. Materials Chemistry and Physics,2013,140(23):508515.
[9] Eliyan F F,Mohammadi F,Alfantazi A. An electrochemical investigation on the effect of the chloride content on CO2corrosion of APIX100 steel[J]. Corrosion Science,2012,64:3743.
[10] Eliyan F F,Alfantazi A. Effect of bicarbonate concentration on corrosion of high strength steel[J]. Corrosion Engineering,Science and Technology,2014,50(3):178185.
[11] Elgaddafi R,Ahmed R,Shah S. Modeling and experimental studies on CO2H2S corrosion of API carbon steels under highpressure[J]. Journal of Petroleum Science and Engineering,2017,156:682696.
[12] Yu C,Gao X,Wang H. Corrosion characteristics of low alloy steel under H2S/CO2environment:Experimental analysis and theoretical research[J]. Materials Letters,2017,209:459462.
[13]张秋利,崔兴,姚蓉. HCO21.Zhang Q L,Cui X,Yao R. Effect of HCO3-concentration of corrosion behavior of X80 pipeline steel in simulated soil solution with high pH value[J]. Journal of Material Protection,2016,49(12):1721.
[14]谷琦琦,简璐,张西雷,等. HCO Gu Q Q,Jian L,Zhang X L,et al. Influence of HCO3-on corrosion resistance of X80 pipeline steel in NaCl solution[J].Heat Treatment of Metals,2015,40(8):179183.
[15] Liu H,Gu T,Zhang G,et al. Corrosion of X80 pipeline steel under sulfatereducing bacterium biofilms in simulated CO2saturated oilfield produced water with carbon source starvation[J]. Corrosion Science,2018,136:4759.
[16] Liu Z,Gao X,Du L,et al. Hydrogen assisted cracking and CO2corrosion behaviors of lowalloy steel with high strength used for armor layer of flexible pipe[J]. Applied Surface Science,2018,440:974991.
[17] Wei L,Pang X,Zhou M,et al. Effect of exposure angle on the corrosion behavior of X70 steel under supercritical CO2and gaseous CO2environments[J]. Corrosion Science,2017,121:5771.
[18] Feng R,Beck J,ZiomekMoroz M,et al. Electrochemical corrosion of ultrahigh strength carbon steel in alkaline brines containing hydrogen sulfide[J]. Electrochimica Acta,2016,212:9981009.
[19]谢飞,王月,王兴发,等.辽河油田土壤中溶解氧对X70管线钢腐蚀的影响[J].表面技术,2018,47(10):186192.Xie F,Wang Y,Wang X F,et al. Effect of dissolved oxygen on corrosion of X70 pipeline steel in Liaohe oilfield[J].Surface Technology,2018,47(10):186192.
[20] Lin J K,Uan J Y. Formation of Mg,Alhydrotalcite conversion coating on Mg alloy in aqueous HCO3-/CO32-and corresponding protection against corrosion by the coating[J]. Corrosion Science,2009,51(5):11811188.
[2]董美,吴明. X80管线钢在模拟液中的电化学行为[J].石油化工高等学校学报,2009,22(2):6669.Dong M,Wu M. Electrochemical behavior in Chinese typical simulated soil solutions of X80 pipeline steel[J]. Journal of Petrochemical Universities,2009,22(2):6669.
[3] Wright R F,Brand E R,ZiomekMoroz M,et al. Effect of HCO3-on electrochemical kinetics of carbon steel corrosion in CO2saturated brines[J]. Electrochimica Acta,2018,290:626638.
[4]王红红,刘国恒.中国海油海底管道事故统计及分析[J].中国海上油气,2017,29(5):157160.Wang H H,Liu G H. Statistics and analysis of subsea pipeline accidents of CNOOC[J]. China Offshore Oil and Gas,2017,29(5):157160.
[5] Bhandari J,Khan F,Abbassi R,et al. Modelling of pitting corrosion in marine and offshore steel structures-A technical review[J]. Journal of Loss Prevention in the Process Industries,2015,37:3962.
[6] Alcántara J,Fuente D D L,Chico B,et al. Marine atmospheric corrosion of carbon steel:A Review[J]. Materials,2017,10(4):406.
[7]陈旭,何川,刘硕,等.应力对X70钢在NaHCO3溶液中腐蚀行为的影响[J].石油化工高等学校学报,2011,24(5):6972.Chen X,He C,Liu S,et al. Effect of stress on corrosion behaviors of X70 steel in NaHCO3solution[J] Journal of Petrochemical Universities,2011,24(5):6972.
[8] Eliyan F F,Alfantazi A. Influence of temperature on the corrosion behavior of APIX100 pipeline steel in 1bar CO2HCO-3solutions:An electrochemical study[J]. Materials Chemistry and Physics,2013,140(23):508515.
[9] Eliyan F F,Mohammadi F,Alfantazi A. An electrochemical investigation on the effect of the chloride content on CO2corrosion of APIX100 steel[J]. Corrosion Science,2012,64:3743.
[10] Eliyan F F,Alfantazi A. Effect of bicarbonate concentration on corrosion of high strength steel[J]. Corrosion Engineering,Science and Technology,2014,50(3):178185.
[11] Elgaddafi R,Ahmed R,Shah S. Modeling and experimental studies on CO2H2S corrosion of API carbon steels under highpressure[J]. Journal of Petroleum Science and Engineering,2017,156:682696.
[12] Yu C,Gao X,Wang H. Corrosion characteristics of low alloy steel under H2S/CO2environment:Experimental analysis and theoretical research[J]. Materials Letters,2017,209:459462.
[13]张秋利,崔兴,姚蓉. HCO21.Zhang Q L,Cui X,Yao R. Effect of HCO3-concentration of corrosion behavior of X80 pipeline steel in simulated soil solution with high pH value[J]. Journal of Material Protection,2016,49(12):1721.
[14]谷琦琦,简璐,张西雷,等. HCO Gu Q Q,Jian L,Zhang X L,et al. Influence of HCO3-on corrosion resistance of X80 pipeline steel in NaCl solution[J].Heat Treatment of Metals,2015,40(8):179183.
[15] Liu H,Gu T,Zhang G,et al. Corrosion of X80 pipeline steel under sulfatereducing bacterium biofilms in simulated CO2saturated oilfield produced water with carbon source starvation[J]. Corrosion Science,2018,136:4759.
[16] Liu Z,Gao X,Du L,et al. Hydrogen assisted cracking and CO2corrosion behaviors of lowalloy steel with high strength used for armor layer of flexible pipe[J]. Applied Surface Science,2018,440:974991.
[17] Wei L,Pang X,Zhou M,et al. Effect of exposure angle on the corrosion behavior of X70 steel under supercritical CO2and gaseous CO2environments[J]. Corrosion Science,2017,121:5771.
[18] Feng R,Beck J,ZiomekMoroz M,et al. Electrochemical corrosion of ultrahigh strength carbon steel in alkaline brines containing hydrogen sulfide[J]. Electrochimica Acta,2016,212:9981009.
[19]谢飞,王月,王兴发,等.辽河油田土壤中溶解氧对X70管线钢腐蚀的影响[J].表面技术,2018,47(10):186192.Xie F,Wang Y,Wang X F,et al. Effect of dissolved oxygen on corrosion of X70 pipeline steel in Liaohe oilfield[J].Surface Technology,2018,47(10):186192.
[20] Lin J K,Uan J Y. Formation of Mg,Alhydrotalcite conversion coating on Mg alloy in aqueous HCO3-/CO32-and corresponding protection against corrosion by the coating[J]. Corrosion Science,2009,51(5):11811188.