Aluminum Electroplated from Ionic Liquids as Protective Coating against Steel Corrosion
摘 要
采用66.7 %(摩尔分数) AlCl3与33.3 % (摩尔分数)BMIC(1-丁基-3-甲基咪唑氯盐)混合后得到的AlCl3-BMIC离子液体为电解液, 在钢铁基体上采用恒电流法进行电镀铝的研究, 主要考察了添加剂、温度、电流密度对镀层形貌的影响及镀层耐腐蚀性能。结果表明: 温度45±2 ℃、甲苯含量为5~12 ml/L、电流密度为20~25 mA/cm2时, 能获得平整致密的铝镀层; 所得铝镀层以(200)面构成为主, 随电流密度的增加, (200)面峰增强; 在电流密度25 mA/cm2电镀铝后, 试样的腐蚀电位从-669 mV(SCE)负移至-1019 mV(SCE), 腐蚀电流密度从65.7 μA/cm2变为6.07 μA/cm2,与纯铝的(Ecorr=-1031 mV(SCE), Icorr=1.24 μA/cm2)相当。
Abstract
An ionic liquid electrolyte was prepared by mixing 66.7 mol% anhydrous AlCl3 and 33.3 mol% 1-Butyl-3-methylimidazolium chloride (BMIC) in AlCl3 BMIC melt. The effect of temperature, current density, and amount of toluene additive on the electroplating process was studied. The characterization of the deposited aluminum was performed using scanning electron microscopy (SEM/EXD) and X-ray diffraction (XRD) techniques. The corrosion resistance of the deposited Al coatings was studied by electrochemical testing. The results showed that a dense and well adherent aluminum coating was obtained under the conditions of 45±2 ℃, current density of 20~25 mA/cm2, and content of toluene 5~12 ml/L. All of the electrodeposits exhibited a strong preferred (200) crystallographic orientation, and the preferred (200) orientation was enhanced with the increase of current density. By depositing Al coating at 25 mA/cm2, the corrosion potential Ecorr and the corrosion current density Icorr of Fe substrate moved to negative direction from -669 mV (SCE) to -1019 mV (SCE), from 65.7 μA/cm2 to 6.07 μA/cm2 separately, comparable to those of pure Al (Ecorr=-1031 mV (SCE), Icorr=1.24 μA/cm2).
中图分类号 TQ153.1
所属栏目 试验研究
基金项目
收稿日期 2010/5/24
修改稿日期 2010/6/12
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备注梅天庆,副教授,
引用该论文: YU Guang-nan,MEI Tian-qing,HE Li-min. Aluminum Electroplated from Ionic Liquids as Protective Coating against Steel Corrosion[J]. Corrosion & Protection, 2011, 32(2): 86
被引情况:
【1】胡丽华,常炜,路民旭,张雷,许立宁,李少飞, "乙二醇对海底管道CO2腐蚀的抑制作用",腐蚀与防护 33, 463-465(2012)
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参考文献
【1】李庆锋, 邱竹贤. 铝的电化学——生产与应用[M]. 沈阳: 东北大学出版社, 2003: 3-6, 240.
【2】黄子勋. 实用电镀技术[M]. 北京: 化学工业出版社, 2002.
【3】邓友全. 离子液体-性质、制备与应用[M]. 第一版, 北京:中国石化出版社,2006,48-67,377-381.
【4】Gray J L,Macie G E. Aluminum coatings electrodeposited on mild steel in ionic liquid[J]. J Am Chem Soc,1981,chemical 103:71-47.
【5】Jones S D,Blomgren G E. Low-temperature molten salt electrolytes based on aralkyl quaternary or ternary onium salts[J]. J Electrochem Soc,1989,136(2):424-427.
【6】Carlin R T,Crawford W,Bersch M. Nucleation and morphology studies of aluminum deposited from an ambient-temperature chloroaluminate molten salt[J]. J Electrochem Soc,1992,13(9):2720-2727.
【7】Zhao Y,VanderNoot T J. Electrodeposition of aluminum from room temperature AlCl3-TMPAC molten salts[J]. Electrochim Acta,1997,42(11):1639-1643.
【8】Tetsuya T,Toshiyuki N,Yasuhiko I. Nucleation and surface morphology of aluminum-lanthanum alloy electrodeposited in a LaCl3-saturated AlCl3-EtMeImCl room temperature molten salt[J]. Electrochemical Acta,2002,47:2817-2822.
【9】Jiang T,Chollier Brym M J. Electrodeposition of aluminum from ionic liquids:Part Ⅰ-electrodeposition and surface morphology of aluminum from aluminum chloride ([EMIM]Cl) ionic liquid[J]. Surface & Coating Technology,2006,201:1-9.
【10】Stefano Caporali,Alessio Fossati,Alessandro Lavacchi,et al. Aluminum electroplated from ionic liquids as protective coating against steel corrosion[J]. Corrosion Science,2008(50):534-539.
【11】冯秋元,丁志敏,贾利山,等. 低温熔融盐电镀铝的研究[J]. 材料保护,2004,37(4):1-3.
【2】黄子勋. 实用电镀技术[M]. 北京: 化学工业出版社, 2002.
【3】邓友全. 离子液体-性质、制备与应用[M]. 第一版, 北京:中国石化出版社,2006,48-67,377-381.
【4】Gray J L,Macie G E. Aluminum coatings electrodeposited on mild steel in ionic liquid[J]. J Am Chem Soc,1981,chemical 103:71-47.
【5】Jones S D,Blomgren G E. Low-temperature molten salt electrolytes based on aralkyl quaternary or ternary onium salts[J]. J Electrochem Soc,1989,136(2):424-427.
【6】Carlin R T,Crawford W,Bersch M. Nucleation and morphology studies of aluminum deposited from an ambient-temperature chloroaluminate molten salt[J]. J Electrochem Soc,1992,13(9):2720-2727.
【7】Zhao Y,VanderNoot T J. Electrodeposition of aluminum from room temperature AlCl3-TMPAC molten salts[J]. Electrochim Acta,1997,42(11):1639-1643.
【8】Tetsuya T,Toshiyuki N,Yasuhiko I. Nucleation and surface morphology of aluminum-lanthanum alloy electrodeposited in a LaCl3-saturated AlCl3-EtMeImCl room temperature molten salt[J]. Electrochemical Acta,2002,47:2817-2822.
【9】Jiang T,Chollier Brym M J. Electrodeposition of aluminum from ionic liquids:Part Ⅰ-electrodeposition and surface morphology of aluminum from aluminum chloride ([EMIM]Cl) ionic liquid[J]. Surface & Coating Technology,2006,201:1-9.
【10】Stefano Caporali,Alessio Fossati,Alessandro Lavacchi,et al. Aluminum electroplated from ionic liquids as protective coating against steel corrosion[J]. Corrosion Science,2008(50):534-539.
【11】冯秋元,丁志敏,贾利山,等. 低温熔融盐电镀铝的研究[J]. 材料保护,2004,37(4):1-3.
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