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Full-Text Articles in Engineering Science and Materials
Corrosion Inhibition Of Self-Assembled Films On Iron By Electrochemical Impedance Spectroscopy, Yuan-Yuan Feng, Shen-Hao Chen, Juan-Juan Zhou, Wen-Juan Guo
Corrosion Inhibition Of Self-Assembled Films On Iron By Electrochemical Impedance Spectroscopy, Yuan-Yuan Feng, Shen-Hao Chen, Juan-Juan Zhou, Wen-Juan Guo
Journal of Electrochemistry
The self-assembled films of tetradecylamine were formed on iron surface,and the inhibition ability of which for iron corrosion in 0.5 mol/L H2SO4 solutions was studied by electrochemical impedance spectroscopy technique.Results indicated that longer immersion time would result in stronger inhibition ability of the films.The maximal inhibition efficiency(IE) of the tetradecylamine films was 68.7%.When the tetradecylamine films were modified by dodecylthiol,the mixed films became denser and more stable,thus the inhibition ability increased remarkably.The η of the mixed films increased to 78.2%.
Study Of Triethyl Phosphate Self-Assembled Films On Iron For Corrosion Inhibition, Wen-Juan Guo, Shen-Hao Chen, Wei He, Xue-Hui Pang, Yuan-Yuan Feng
Study Of Triethyl Phosphate Self-Assembled Films On Iron For Corrosion Inhibition, Wen-Juan Guo, Shen-Hao Chen, Wei He, Xue-Hui Pang, Yuan-Yuan Feng
Journal of Electrochemistry
The self-assembled film of triethyl phosphate(TEP) formed on the iron surface was found to protect iron from corrosion in 0.5 mol·L-1 H2SO4 efficiently.The inhibition effects were investigated using the electrochemical impedance spectroscopy(EIS).EIS demonstrated that the charge-transfer resistance of the electrode covered with TEP film was greater than that of the naked iron electrodes and the inhibition efficiency of TEP film increased quickly in the initial period and then increased slowly.Quantum chemical calculations provide information about the process of adsorption of molecules on the metal surface at the molecular level.