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| 4-Chloro-benzoic acid [1,2,4]triazol-1-ylmethyl ester as an effective inhibitor of mild steel corrosion in HCl solution | |
Tao, Z.1; Zhang, S.1 ; Li, W.2; Hou, B.2
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| 2010-10-01 | |
| 发表期刊 | MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
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| 卷号 | 61期号:10页码:877-884 |
| 文章类型 | Article |
| 摘要 | 4-Chloro-benzoic acid [1,2,4]triazol-1-ylmethyl ester (CBT) was synthesized and its inhibiting action on the corrosion of mild steel in 1 M hydrochloric acid solutions was investigated by means of weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM). The results showed that CBT is an excellent inhibitor for mild steel in acid medium and its inhibition efficiency (IE%) is up to 90.2% at a concentration of 10(-3) M at 298 K. EIS showed that the charge transfer controls the corrosion process in the uninhibited and inhibited solutions. Potentiodynamic polarization studies clearly reveal that CBT acts essentially as mixed-type inhibitor. Thermodynamic parameters such as adsorption heat (Delta H(ads)(0)), adsorption entropy (Delta S(ads)(0)), and adsorption free energy (Delta G(ads)(0)) were obtained and discussed from experimental data of the temperature studies of the inhibition process at four temperatures ranging from 298 to 333 K. Kinetic parameters activation such as E(a), Delta H*, Delta S*, and pre-exponential factor have been calculated and discussed. Adsorption of the inhibitor on the mild steel surface followed Langmuir adsorption isotherm. The values of the free energy of adsorption Delta G(ads)(0) indicated that the adsorption of CBT molecule was a spontaneous process, and was typical of chemisorption. |
| DOI | 10.1002/maco.200905291 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000283636300008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/32754 |
| 专题 | 海洋环境腐蚀与生物污损重点实验室 |
| 作者单位 | 1.Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tao, Z.,Zhang, S.,Li, W.,et al. 4-Chloro-benzoic acid [1,2,4]triazol-1-ylmethyl ester as an effective inhibitor of mild steel corrosion in HCl solution[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,2010,61(10):877-884. |
| APA | Tao, Z.,Zhang, S.,Li, W.,&Hou, B..(2010).4-Chloro-benzoic acid [1,2,4]triazol-1-ylmethyl ester as an effective inhibitor of mild steel corrosion in HCl solution.MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,61(10),877-884. |
| MLA | Tao, Z.,et al."4-Chloro-benzoic acid [1,2,4]triazol-1-ylmethyl ester as an effective inhibitor of mild steel corrosion in HCl solution".MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION 61.10(2010):877-884. |
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