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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
Source PublicationJOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN0021-891X
Volume38Issue:3Pages:289-295
SubtypeArticle
AbstractTwo 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.
KeywordTriazole Derivative Acid Inhibitor Potentiodynamic Polarization Eis Langmuir Adsorption Isotherm
Subject AreaElectrochemistry
DOI10.1007/s10800-007-9437-7
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000254089600003
Citation statistics
Cited Times:363[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/5170
Collection海洋环境腐蚀与与生物污损重点实验室
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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