Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

被引：28
作者：
Benahmed, M. [1 ]
Djeddi, N. [1 ]
Akkal, S. [2 ]
Laouar, H. [3 ]
机构：
[1] Univ Larbi Tebessi, Lab Mol Bioact & Applicat, Route Constantine, Tebessa 12000, Algeria
[2] Univ Mentouri Constantine, Lab Phytochim & Anal Physicochim & Biol, Dept Chim, Fac Sci Exactes, Route dAin el Bey, Constantine 25000, Algeria
[3] Univ Ferhat Abbas Setif, Lab Valorisat Ressources Nat Biol, Dept Biol, Setif, Algeria
来源：
INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY | 2016年 / 7卷 / 02期
关键词：
Carbon steel X52; Saccocalyx satureioides; Inhibition;
D O I：
10.1007/s40090-016-0082-z
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The inhibitory effect of the crude ethyl acetate extract of Saccocalyx satureioides was estimated on the corrosion of carbon steel (X52) in 1 M HCl solution sing weight loss measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and scanning electron microscopy techniques. Potentiodynamic polarization curves indicated that the plants extract behaves as a mixed-type inhibitor. The adsorption of the inhibitor on the carbon steel surface was found to follow Freundlich adsorption isotherm. The free energies, enthalpies and entropies for the adsorption and dissolution process were discussed in details. The inhibiting action increases with increasing concentration of the extract. The results obtained show that the extract of the aerial parts of Saccocalyx satureioides could serve as an effective corrosion inhibitor of carbon steel (X52) in hydrochloric acid medium.
引用
收藏
页码：109 / 120
页数：12
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