2,3,5-triphenyl-2H-tetrazolium chloride and 2,4,6-tri(2-pyridyl)-s-triazine on the corrosion of mild steel in HCl
Pang Xuehui1; Hou Baorong2; Li Weihua2; Liu Faqian3; Yu Zhigang1
2007-12-01
发表期刊CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
卷号15期号:6页码:909-915
文章类型Article
摘要Electrochemical measurement, quantum chemical method, and scanning electron microscopy (SEM) were performed to investigate the inhibitive effect of 2,3,5-triphenyl-2H-tetrazolium chloride (TTC) and 2,4,6-tri(2-pyridyl)-s-triazine(TPT) on the corrosion of mild steel in 1mol.L-1 HCl at room temperature. Impedance spectroscopy measurement showed that the polarization resistance increased and that double layer capacitance decreased with the increase in the inhibitive concentration, and the results of potentiodynamic polarization showed that the inhibitors suppressed both cathodic and anodic processes of steel corrosion without change in the mechanism. Higher the orbital density distribution strength of the lowest unoccupied molecular orbital, higher is the molecule dipole, and lower energy gap between the energy of the highest occupied molecular orbital and the energy of the lowest unoccupied molecular orbital resulted in higher inhibitory efficiency. The results of SEM analysis showed that the metal was protected from aggressive corrosion by the addition of TTC and TPT.; Electrochemical measurement, quantum chemical method, and scanning electron microscopy (SEM) were performed to investigate the inhibitive effect of 2,3,5-triphenyl-2H-tetrazolium chloride (TTC) and 2,4,6-tri(2-pyridyl)-s-triazine(TPT) on the corrosion of mild steel in 1mol.L-1 HCl at room temperature. Impedance spectroscopy measurement showed that the polarization resistance increased and that double layer capacitance decreased with the increase in the inhibitive concentration, and the results of potentiodynamic polarization showed that the inhibitors suppressed both cathodic and anodic processes of steel corrosion without change in the mechanism. Higher the orbital density distribution strength of the lowest unoccupied molecular orbital, higher is the molecule dipole, and lower energy gap between the energy of the highest occupied molecular orbital and the energy of the lowest unoccupied molecular orbital resulted in higher inhibitory efficiency. The results of SEM analysis showed that the metal was protected from aggressive corrosion by the addition of TTC and TPT.
关键词Corrosion Inhibition Quantum Chemistry Electrochemical Measurement Scanning Electron Microscopy
学科领域Engineering, Chemical
收录类别SCI
语种英语
WOS记录号WOS:000252240900025
引用统计
被引频次:15[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/337002/5144
专题海洋环境腐蚀与生物污损重点实验室
作者单位1.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266003, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
3.Qingdao Univ Sci & Technol, New Mat & Funct Coordinat Chem Lab, Qingdao 266042, Peoples R China
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GB/T 7714
Pang Xuehui,Hou Baorong,Li Weihua,et al. 2,3,5-triphenyl-2H-tetrazolium chloride and 2,4,6-tri(2-pyridyl)-s-triazine on the corrosion of mild steel in HCl[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2007,15(6):909-915.
APA Pang Xuehui,Hou Baorong,Li Weihua,Liu Faqian,&Yu Zhigang.(2007).2,3,5-triphenyl-2H-tetrazolium chloride and 2,4,6-tri(2-pyridyl)-s-triazine on the corrosion of mild steel in HCl.CHINESE JOURNAL OF CHEMICAL ENGINEERING,15(6),909-915.
MLA Pang Xuehui,et al."2,3,5-triphenyl-2H-tetrazolium chloride and 2,4,6-tri(2-pyridyl)-s-triazine on the corrosion of mild steel in HCl".CHINESE JOURNAL OF CHEMICAL ENGINEERING 15.6(2007):909-915.
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