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Full-Text Articles in Physical Sciences and Mathematics
Inhibition Of Amino Acids Against Steel In Hydrochloric Acid Solution, Ming-Yan Cheng, Wei-Ming Wu, He-Ming Liu, Hai-Yan Du
Inhibition Of Amino Acids Against Steel In Hydrochloric Acid Solution, Ming-Yan Cheng, Wei-Ming Wu, He-Ming Liu, Hai-Yan Du
Journal of Electrochemistry
The inhibition effect of glutamic acid towards the corrosion of X65 steel in hydrochloric acid solution(10%) was investigated using polarization techniques、electrochemical impedance spectroscopy(EIS) and SEM.The corrosion rate,corrosion potential(Ecoor),polarization resistance(Rp) and inhibition efficiency(η) were determined.The results revealed that the inhibitor is a mixed type inhibitor.It has promising corrosion inhibition efficiency at low concentrations.The inhibition efficiency(η) increased with increasing the concentration.The maximum inhibition efficiency appeared at 0.3 g·L-1.
Inhibition Mechanism Of The Imidazoline Derivate In H_2s Solution, Jing-Mao Zhao, He-Xia Liu, Chao Xiao, Yuan Lu
Inhibition Mechanism Of The Imidazoline Derivate In H_2s Solution, Jing-Mao Zhao, He-Xia Liu, Chao Xiao, Yuan Lu
Journal of Electrochemistry
Weight-loss method and polarization curve measurement were employed to study the inhibition mechanism of imidazoline derivate for mild steel in acidic solution with H2S.The results show that the derivate can retard the cathodic process,and belongs to the cathodic-type inhibitor.The adsorption of the derivate on the surface of mild steel accords with the amended Langmuir adsorption isothermal equation,and higher temperature will facilitate its adsorption.The changes in the apparent activation energy(Ea) and the pre-exponential factor(A) of the corrosion reaction before and after the addition of inhibitor were also discussed.