Corrosion Inhibition of Zn in a 0.5 M HCl Solution by Ailanthus Altissima Extract

被引：19

作者：

Fouda, A. S. ^{[1
]}

Rashwan, S. M. ^{[2
]}

Darwish, M. M. K. ^{[2
]}

Arman, N. M. ^{[1
]}

机构：

[1] El Mansoura Univ, Fac Sci, Dept Chem, Mansoura, Egypt

[2] Suez Canal Univ, Fac Sci, Dept Chem, Ismailia, Egypt

来源：

PORTUGALIAE ELECTROCHIMICA ACTA | 2018年 / 36卷 / 05期

关键词：

ailanthus altissima extract; HCl; Zn; corrosion inhibition; WL; HE; PP; EIS; EFM and surface morphology;

D O I：

10.4152/pea.201805309

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The inhibiting effect of Ailanthus altissima aqueous extract, as a corrosion inhibitor for Zn in a 0.5 M HCl solution, has been evaluated by weight loss (WL), hydrogen evolution (HE), potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Obtained results showed that this extract offered good protection against Zn corrosion, and exhibited high inhibition efficiencies. The IE was found to increase with an increasing extract dose. Results revealed that this extract acted as a mixed-type inhibitor, and adsorbed onto the Zn surface following Temkin isotherm. Obtained results were justified from the study of surface morphology.

引用

页码：309 / 323

页数：15

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