一种噻二唑类缓蚀剂对模拟海水中2024铝合金的缓蚀作用
Corrosion Inhibition of Thiadiazole Inhibitor in Simulated Seawater on 2024 Aluminum Alloy
摘 要
采用电化学方法研究了一种绿色缓蚀剂(2-巯基-5-邻取代苯基-1,3,4噻二唑)对2024铝合金的缓蚀作用。并采用量子化学半经验算法对该缓蚀剂进行了几何全优化。结果表明，该缓蚀剂能有效抑制铝合金点蚀，缓蚀效率达92%，是混合型缓蚀剂; 该缓蚀剂是以活性中心优先吸附的方式与铝合金作用。
缓蚀
铝合金
点蚀
电化学测量
thiadiazole
inhibition
aluminum alloy
pitting corrosion
electrochemical measurement
Abstract
The corrosion inhibition of an environment-friendly inhibitor (2-thiol-5-o-tolyl-1,3,4-thiadiazole) on 2024 aluminum alloy was studied by electrochemical method. The structure and orbital energy of the thiadiazole molecule was evaluated by quantum chemical semi-empirical method.The results show that the inhibitor can effectively decrease the rate of corrosion. The inhibition efficiency of the thiadiazole is up to 92% and the thiadiazole is a mixed type inhibitor. The inhibition mechanism is that the inhibitor reacts with aluminum alloy by adsorbing on the active centers.
中图分类号 TG174.42
所属栏目 试验研究
基金项目 国家自然科学基金(51179182); 山东省杰出青年基金(JQ201217); 青岛市产学研合作引导计划项目(12-1-4-8-(1)-jch)
收稿日期 2012/12/4
修改稿日期
网络出版日期
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备注李伟华,副研究员,博士,
引用该论文: JIANG Qin,LI Wei-hua,HOU Bao-rong. Corrosion Inhibition of Thiadiazole Inhibitor in Simulated Seawater on 2024 Aluminum Alloy[J]. Corrosion & Protection, 2013, 34(8): 673
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参考文献
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【2】张云霞,闫永贵,苏策,等. 缓蚀剂对2024铝合金在海水中缝隙腐蚀行为的影响[J]. 腐蚀科学与防护技术，2010,22(1):57-60.
【3】梅平，施汉荣，张引,等. 噻唑类缓蚀剂QADT的合成及缓蚀性能研究[J]. 油气田环境保护，2011,21(4):14-16.
【4】梁平,张云霞. 铝合金海水缓蚀剂研究进展[J]. 腐蚀与防护，2010,31(9):737-740.
【5】Gouveia Caridade C,Pereira M I S,Brett C M A. Electrochemical noise and impedance study of aluminium in weakly acid chloride solution[J]. Electrochimica Acta,2004,49(5):785-790.
【6】Sherif E M,Su-Moon Park. 2-Amino-5-ethyl-1,3,4-thiadiazole as a corrosion inhibitor for copper in 3.0% NaCl solutions[J]. Corrosion Science,2006,48(12):4065-4079.
【7】朱芳坤，范迎宾，曲黎,等. 2-十二烷基二硫代-4-苯基-1，3，4-噻二唑-5-硫酮的合成及抗腐蚀研究[J]. 河南科技学院学报,2009,37(1):63-65.
【8】于萍，罗运柏. 改性噻二唑有机铜缓蚀剂性能的研究[J]. 材料保护，1997,30(10):6-7.
【9】高立新，张大全，陆柱,等. 含苯并三唑和噻二唑单元的铜缓蚀剂制备和缓蚀作用[J]. 华东理工大学学报，2001,27(1):84-88.
【10】朱丽琴，刘瑞泉，王吉德. 噻二唑衍生物在3％ NaHCO3溶液中对Cu的缓蚀作用[J]. 中国腐蚀与防护学报，2006,26(2):125-128.
【11】白雪. 氮杂环类化合物的合成及其缓释性能研究[D]. 青岛: 青岛科技大学硕士学位论文，2012.
【12】Jüttner K. Electrochemical impedance spectroscopy (EIS) of corrosion processes on inhomogeneous surfaces[J]. Electrochimica Acta,1990,35(11):1501-1508.
【13】Aljourani J,Raeissi K,Golozar M A. Benzimidazole and its derivatives as corrosion inhibitors for mild steel in 1M HCl solution[J]. Corrosion Science,2009(51):1836-1843.
【14】Behpour M,Ghoreishi S M,Mohammadi N,et al. Investigation of some schiff base compounds containing disulfide bond as HCl corrosion inhibitors for mild steel[J]. Corrosion Science,2010,52:4046-4057.
【15】El-Sayed M Sherif,Erasmus R M,Comins J D. Inhibition of copper corrosion in acidic chloride pickling solutions by 5-(3-aminophenyl)-tetrazole as a corrosion inhibitor[J]. Corrosion Science,2008,50(1):3439-3445.
【16】Li W H,He Q,Pei C L,et al. Experimental and theoretical investigation of the adsorption behaviour of new triazole derivatives as inhibitors for mild steel corrosion in acid media[J]. Electrochimica Acta,2007,52:6386-6394.
【17】Li W H,Hu L C,Zhang S T,et al. Effects of two fungicides on the corrosion resistance of copper in 3.5% NaCl solution under various conditions[J]. Corrosion Science,2011,53:735-745.
【18】王成，江峰，林海潮. 钼酸铵对LY12铝合金的缓蚀作用[J]. 腐蚀与防护，2001,22(3):115-117.
【19】王成，江峰，林海潮. 无机成膜型缓蚀剂对铝合金缓蚀作用的研究[J]. 腐蚀与防护，2000,21(12):539-541.
【20】曾涵，赵淑娴. 几种咪唑类缓蚀剂对铜的缓蚀作用机理初步分析[J]. 新疆师范大学学报:自然科学版，2007,26:62-65.
【21】El-Sayed M Sherif,El Shamy A M,Mostafa M Ramla,et al. 5-(Phenyl)-4H-1,2,4-triazole-3-thiol as a corrosion inhibitor for copper in 3.5% NaCl solutions[J]. Materials Chemistry and Physics,2007,102:231-239.
【22】Mahdavian M,Ashhari S. Corrosion inhibition performance of 2-mercaptobenzimidazole and 2-mercaptobenzoxazole compounds for protection of mild steel in hydrochloric acid solution[J]. Electrochimica Acta,2010,55:1720-1724.
【23】Yan Y,Li W H,Cai L K,et al. Electrochemical and quantum chemical study of purines as corrosion inhibitors for mild steel in 1M HCl solution[J]. Electrochimica Acta,2008,53:5953-5960.
【24】Amalanathan M,Rastogi V K,Joe I H,et al. Density functional theory calculations and vibrational spectral analysis of 3,5-(dinitrobenzoic acid)[J]. Spectrochimica Acta,2011,78:1437-1444.
【25】Gobinath E,John Xavier R. Quantum chemical calculations,vibrational studies,HOMO LUMO and NBO/NLMO analysis of 2-bromo-5-nitrothiazole[J]. Spectrochimica Acta Part A:Molecular and Biomolecular Spectroscopy,20B,104(3):394-402.
【26】Ramji K,Cairns D R,Rajeswari S. Synergistic inhibition effect of 2-mercaptobenzothiazole and Tween-80 on the corrosion of brass in NaCl solution[J]. Applied Surface Science,2008,254:4483-4493.
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