共 50 条
Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium
被引:17
|作者:
Pavithra, M. K.
[1
]
Venkatesha, T. V.
[1
]
Kumar, M. K. Punith
[2
]
Anantha, N. S.
[1
]
机构:
[1] Kuvempu Univ, Sch Chem Sci, Dept Chem, Jnana Sahyadri Campus, Shimoga 577451, Karnataka, India
[2] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
关键词:
Acid solutions;
Corrosion inhibitor;
Mild steel;
Potentiodynamic polarisation;
Electrochemical impedance spectroscopy;
Weight loss;
ACID-SOLUTION;
CARBON-STEEL;
BENZIMIDAZOLE;
ADSORPTION;
DERIVATIVES;
DRUG;
D O I:
10.1007/s11164-015-2158-3
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The inhibition effect of colchicine (CC) on mild steel (MS) corrosion in 1 M HCl solution has been investigated by electrochemical techniques such as electrochemical impedance spectroscopy, potentiodynamic polarization, chronoamperometry and also by the gravimetric method. Polarization studies showed that CC acts as mixed type corrosion inhibitor. The inhibitor adsorption process in the MS/CC/HCl system was studied at different temperatures (303-333 K). The adsorption of CC on MS surface is an exothermic process and obeys the Langmuir adsorption isotherm. Based on potential of zero charge values and quantum chemical parameters, the mechanism of adsorption has been proposed.
引用
收藏
页码:2409 / 2428
页数:20
相关论文