曼尼希碱/钨酸钠复配对N80钢缓蚀的协同作用
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摘要
采用电化学方法和扫描电镜研究曼尼希碱与钨酸钠在盐酸溶液中对N80钢的缓蚀作用,探讨其在N80钢表面的吸附行为,并且从腐蚀热力学和动力学角度分析复合缓蚀剂分子的缓蚀机理。结果表明:曼尼希碱加入盐酸溶液中后,增大了电荷转移电阻,降低了金属表面的腐蚀速率;它与钨酸钠复配后,金属表面的饱和吸附量增加,N80钢在盐酸溶液中的抗腐蚀性能显著增加,表现出了良好的协同效应。当曼尼希碱和钨酸钠摩尔比为1∶1.5时,缓蚀效率可达99.65%。该缓蚀剂在N80钢表面的吸附服从Langmuir吸附模型,属于以化学吸附为主的吸附,且此过程为吸热反应。
The corrosion inhibition effect and adsorption behavior for N80 steel in HCl solution were investigated by using electrochemical method and scanning electron microscope, meanwhile, the corrosion inhibition mechanism of inhibitors was analysed from the point of view of the thermodynamic. The results indicate that when Mannich base is added into HCl solution, the charge transfer resistance increases, thereby the corrosion rate of metal surface is reduced. When Mannich base is compound with sodium tungstate, the saturated adsorption capacity of inhibitors on metal surface increases, and the corrosion resistance of N80 steel in HCl solution increases significantly, showing a good synergistic effect. When the molar ratio of Mannich base to sodium tungstate is 1∶1.5, the highest inhibition efficiency can reach 99.65%. The adsorption of inhibitors on the surface of N80 is in accordance with the Langmuir adsorption model, and it mainly belongs to chemisorption. The process of adsorption on N80 surface is spontaneous and irreversible endothermic reaction.
The corrosion inhibition effect and adsorption behavior for N80 steel in HCl solution were investigated by using electrochemical method and scanning electron microscope, meanwhile, the corrosion inhibition mechanism of inhibitors was analysed from the point of view of the thermodynamic. The results indicate that when Mannich base is added into HCl solution, the charge transfer resistance increases, thereby the corrosion rate of metal surface is reduced. When Mannich base is compound with sodium tungstate, the saturated adsorption capacity of inhibitors on metal surface increases, and the corrosion resistance of N80 steel in HCl solution increases significantly, showing a good synergistic effect. When the molar ratio of Mannich base to sodium tungstate is 1∶1.5, the highest inhibition efficiency can reach 99.65%. The adsorption of inhibitors on the surface of N80 is in accordance with the Langmuir adsorption model, and it mainly belongs to chemisorption. The process of adsorption on N80 surface is spontaneous and irreversible endothermic reaction.
引文
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[25] 木冠南,李向红,屈庆,等.稀土铈(Ⅳ)离子和钼酸钠在盐酸溶液中对冷轧钢的缓蚀协同效应[J].化学学报,2004,62(24):2386-2390. MU G N,LI X H,QU Q,et al.Synergistic effect on corrosion inhibition by cerium(Ⅳ) ion and sodium molybdate for cold rolled steel in hydrochloric acid solution[J].Acta Chimica Sinica,2004,62(24):2386-2390.
[26] MACHNIKOVA E,WHITMIRE K H,HACKERMAN N.Corrosion inhibition of carbon steel in hydrochloric acid by furan derivatives[J].Electrochimica Acta,2008,53(20):6024-6032.
[27] ASHASSI-SORKHABI H,MAJIDI M R,SEYYEDI K.Investigation of inhibition effect of some amino acids against steel corrosion in HCl solution[J].Applied Surface Science,2004,225(1/4):176-185.
[28] 许奕春,汤兵,付丰连,等.绿色聚天冬氨酸复配缓蚀剂对A3碳钢的缓蚀抑雾作用[J].物理化学学报,2010,26(5):1225-1232. XU Y C,TANG B,FU F L,et al.Corrosion inhibition and antifog properties of an environmentally friendly polyaspartate inhibitor on A3 carbon steel[J].Acta Physico-Chimica Sinica,2010,26(5):1225-1232.
[2] SINGH A K,MOHAPATRA S,PANI B.Corrosion inhibition effect of aloe vera gel:gravimetric and electrochemical study[J].Journal of Industrial and Engineering Chemistry,2016,33:288-297.
[3] 张艳,李倩,王胜刚.2507双相不锈钢在NaClO溶液中的腐蚀性能[J].材料工程,2016,44(1):108-114. ZHANG Y,LI Q,WANG S G.Corrosion resistance of 2507 duplex stainless steel in NaClO solution[J].Journal of Materials Engineering,2016,44(1):108-114.
[4] 刘福国,杜敏.新型复配缓蚀剂对G105钢在NaCl溶液中缓蚀行为的影响[J].金属学报,2007,43(9):989-993. LIU F G,DU M.Effect of new type compound inhibitor on inhibition behavior of steel G105 in NaCl solution[J].Acta Metallurgica Sinica,2007,43(9):989-993.
[5] 郝志峰,余坚,饶耀,等.缓蚀剂对水基环保免清洗助焊剂缓蚀性能的影响[J].化工学报,2014,65(4):1359-1367. HAO Z F,YU J,RAO Y,et al.Effect of corrosion inhibitor on corrosion inhibition performance of water-based environmental-friendly no-clean flux[J].CIESC Journal,2014,65(4):1359-1367.
[6] MUSA A Y,JALGHAM R T T,MOHAMAD A B.Molecular dynamic and quantum chemical calculations for phthalazine derivatives as corrosion inhibitors of mild steel in 1M HCl[J].Corrosion Science,2012,56(3):176-183.
[7] LINDSAY R,LYON S B.Introduction to control of corrosion by environmental modification[J].Shreir’s Corrosion,2010,4:2891-2899.
[8] RAJEEV P,SURENDRANATHAN A O,MURTHY C S N.Corrosion mitigation of the oil well steels using organic inhibitors-a review[J].Journal of Materials and Environmental Science,2012,3(5):856-869.
[9] FIN?GAR M,JACKSON J.Application of corrosion inhibitors for steels in acidic media for the oil and gas industry:a review [J].Corrosion Science,2014,86:17-41.
[10] MORALES-GIL P,WALCZAK M S,CAMARGO C R,et al.Corrosion inhibition of carbon-steel with 2-mercaptobenzimidazole in hydrochloric acid[J].Corrosion Science,2015,101:47-55.
[11] 李克华,吴兰兰.曼尼希碱缓蚀剂XJ合成及其对N80钢的缓蚀性能[J].油田化学,2013,30(3):434-437. LI K H,WU L L.Synthesis of XJ Mannich base inhibitor and research of N80 steel corrosion performance[J].Oilfield Chemistry,2013,30(3):434-437.
[12] AHAMAD I,PRASAD R,QURAISHI M A.Adsorption and inhibitive properties of some new Mannich base of isatin derivatives on corrosion of mild steel in acidic media[J].Corrosion Science,2010,52(4):1472-1481.
[13] 任晓光,周继敏,刘丹,等.曼尼希碱及其复配缓蚀剂对N80钢的缓蚀性能[J].钻井液与完成液,2010,27(2):72-73. REN X G,ZHOU J M,LIU D,et al.Corrosion inhibition of Mannich base corrosion inhibitor to N80 steel[J].Drilling Fluid & Completion Fluid,2010,27(2):72-73.
[14] ELEWADY G Y,MOSTAFA H A.Ketonic secondary Mannich bases as corrosion inhibitors for aluminium[J].Desalination, 2009,247(1/3):573-582.
[15] 李国德,王艳,曹中秋.晶粒细化对金属Cr在含Cl-介质中腐蚀电化学行为的影响[J].化工学报,2012,63(2):560-566. LI G D,WANG Y,CAO Z Q.Effect of refined grain size on corrosion behavior of metal Cr in media containing chloride ions [J].CIESC Journal,2012,63(2):560-566.
[16] 胡军,王赟,余历军,等.硫酸银对氯离子环境下Alloy690的缓蚀特性分析[J].化工学报,2014,65(10):4032-4038. HU J,WANG Y,YU L J,et al.Electrochemical analysis of inhibition by silver sulfate for Alloy690 in chloride solution[J].CIESC Journal,2014,65(10):4032-4038.
[17] 赵曦,贾瑞灵,周伟光,等.稀土对AZ91镁合金干/湿循环腐蚀产物及阻抗行为的影响[J].材料工程,2017,45(4):41-50. ZHAO X,JIA R L,ZHOU W G,et al. Effect of rare earth on corrosion products and impedance behavior of AZ91 magnesium alloy under dry-wet cycles[J].Journal of Materials Engineering,2017,45(4):41-50.
[18] 于美,董宇,王瑞阳,等.23Co14Ni12Cr3Mo超高强钢在模拟海水环境中的腐蚀行为[J].材料工程,2012(1):42-50. YU M,DONG Y,WANG R Y,et al.Corrosion behavior of ultra high strength steel 23Co14Ni12Cr3Mo in simulated seawater environment[J].Journal of Materials Engineering,2012(1):42-50.
[19] SINGH A,LIN Y,IU W Y,et al.A study on the inhibition of N80 steel in 3.5% NaCl solution saturated with CO2 by fruit extract of Gingko biloba[J].Journal of the Taiwan Institute of Chemical Engineers,2014,45(4):1918-1926.
[20] BENTISS F,LEBRINI M,LAGRENEE M.Thermodynamic characterization of metal dissolution and inhibitor adsorption processes in mild steel/2,5-bis(n-thienyl)-1,3,4-thiadiazoles/hydrochloric acid system[J].Corrosion Science,2005,47(12):2915-2931.
[21] YADAV M,KUMAR S,PURKAIT T,et al.Electrochemical,thermodynamic and quantum chemical studies of synthesized benzimidazole derivatives as corrosion inhibitors for N80 steel in hydrochloric acid[J].Journal of Molecular Liquids,2016,213:122-138.
[22] 胡松青,胡建春,范成成,等.新型咪唑啉化合物在H2S/CO2共存条件下对Q235钢的缓蚀性能[J].物理化学学报,2010,26(8):2163-2170. HU S Q,HU J C,FAN C C,et al.Corrosion inhibition of Q235 steel by a novel imidazoline compound under H2S and CO2 coexistence[J].Acta Physico-Chimica Sinica,2010,26(8):2163-2170.
[23] YüCE A O,KARDAS G.Adsorption and inhibition effect of 2-thiohydantoin on mild steel corrosion in 0.1 M HCl [J].Corrosion Science,2012,58:86-94.
[24] DAOUD D,DOUADI T,ISSAADI S,et al.Adsorption and corrosion inhibition of new synthesized thiophene Schiff base on mild steel X52 in HCl and H2SO4 solutions[J].Corrosion Science,2014,79:50-58.
[25] 木冠南,李向红,屈庆,等.稀土铈(Ⅳ)离子和钼酸钠在盐酸溶液中对冷轧钢的缓蚀协同效应[J].化学学报,2004,62(24):2386-2390. MU G N,LI X H,QU Q,et al.Synergistic effect on corrosion inhibition by cerium(Ⅳ) ion and sodium molybdate for cold rolled steel in hydrochloric acid solution[J].Acta Chimica Sinica,2004,62(24):2386-2390.
[26] MACHNIKOVA E,WHITMIRE K H,HACKERMAN N.Corrosion inhibition of carbon steel in hydrochloric acid by furan derivatives[J].Electrochimica Acta,2008,53(20):6024-6032.
[27] ASHASSI-SORKHABI H,MAJIDI M R,SEYYEDI K.Investigation of inhibition effect of some amino acids against steel corrosion in HCl solution[J].Applied Surface Science,2004,225(1/4):176-185.
[28] 许奕春,汤兵,付丰连,等.绿色聚天冬氨酸复配缓蚀剂对A3碳钢的缓蚀抑雾作用[J].物理化学学报,2010,26(5):1225-1232. XU Y C,TANG B,FU F L,et al.Corrosion inhibition and antifog properties of an environmentally friendly polyaspartate inhibitor on A3 carbon steel[J].Acta Physico-Chimica Sinica,2010,26(5):1225-1232.
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