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Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium
Li, Wei-hua1; He, Qiao2; Zhang, Sheng-tao2; Pei, Chang-ling3; Hou, Bao-rong1
2008-03-01
发表期刊JOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN0021-891X
卷号38期号:3页码:289-295
文章类型Article
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.
关键词Triazole Derivative Acid Inhibitor Potentiodynamic Polarization Eis Langmuir Adsorption Isotherm
学科领域Electrochemistry
DOI10.1007/s10800-007-9437-7
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000254089600003
引用统计
被引频次:313[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/5170
专题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
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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.
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