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Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium

文献类型：期刊论文

作者Li, Wei-hua1; He, Qiao2; Zhang, Sheng-tao2; Pei, Chang-ling3; Hou, Bao-rong1
刊名JOURNAL OF APPLIED ELECTROCHEMISTRY
出版日期2008-03-01
卷号38期号:3页码:289-295
关键词Triazole Derivative Acid Inhibitor Potentiodynamic Polarization Eis Langmuir Adsorption Isotherm
ISSN号0021-891X
DOI10.1007/s10800-007-9437-7
文献子类Article
英文摘要Two triazole derivatives, 3,4-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (4-DTM) and 2,5-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (5-DTM) were synthesized, and the inhibition effects for mild steel in 1 M HCl solutions were investigated by weight loss measurements, electrochemical tests and scanning electronic microscopy (SEM). The weight loss measurements showed that these compounds have excellent inhibiting effect at a concentration of 1.0 x 10(-3) M. The potentiodynamic polarization experiment revealed that the triazole derivatives are inhibitors of mixed-type and electrochemical impedance spectroscopy (EIS) confirmed that changes in the impedance parameters (R-ct and C-dl) are due to surface adsorption. The inhibition efficiencies obtained from weight loss measurements and electrochemical tests were in good agreement. Adsorption followed the Langmuir isotherm with negative values of the free energy of adsorption Delta G(ads)(o). The thermodynamic parameters of adsorption were determined and are discussed. Results show that both 4-DTM and 5-DTM are good inhibitors for mild steel in acid media.; Two triazole derivatives, 3,4-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (4-DTM) and 2,5-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (5-DTM) were synthesized, and the inhibition effects for mild steel in 1 M HCl solutions were investigated by weight loss measurements, electrochemical tests and scanning electronic microscopy (SEM). The weight loss measurements showed that these compounds have excellent inhibiting effect at a concentration of 1.0 x 10(-3) M. The potentiodynamic polarization experiment revealed that the triazole derivatives are inhibitors of mixed-type and electrochemical impedance spectroscopy (EIS) confirmed that changes in the impedance parameters (R-ct and C-dl) are due to surface adsorption. The inhibition efficiencies obtained from weight loss measurements and electrochemical tests were in good agreement. Adsorption followed the Langmuir isotherm with negative values of the free energy of adsorption Delta G(ads)(o). The thermodynamic parameters of adsorption were determined and are discussed. Results show that both 4-DTM and 5-DTM are good inhibitors for mild steel in acid media.
学科主题Electrochemistry
URL标识查看原文
语种英语
WOS记录号WOS:000254089600003
公开日期2010-12-24
源URL[http://ir.qdio.ac.cn/handle/337002/5171]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China
3.Qingdao Technol Univ, Sch Civil Engn, Qingdao 266033, Peoples R China
推荐引用方式
GB/T 7714		 Li, Wei-hua,He, Qiao,Zhang, Sheng-tao,et al. Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY,2008,38(3):289-295.
APA Li, Wei-hua,He, Qiao,Zhang, Sheng-tao,Pei, Chang-ling,&Hou, Bao-rong.(2008).Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium.JOURNAL OF APPLIED ELECTROCHEMISTRY,38(3),289-295.
MLA Li, Wei-hua,et al."Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium".JOURNAL OF APPLIED ELECTROCHEMISTRY 38.3(2008):289-295.

入库方式： OAI收割

来源：海洋研究所

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