Corrosion inhibition of C-steel in acidic media from fruiting bodies of Melia azedarach L extract and a synergistic Ni2+ additive

被引：44

作者：

Ali, A. I. ^{[1
]}

Mahrous, Y. Sh. ^{[2
]}

机构：

[1] Benha Univ, Chem Dept, Fac Sci, Banha 13512, Egypt

[2] CMRDI, POB 87, Cairo 11421, Egypt

来源：

RSC ADVANCES | 2017年 / 7卷 / 38期

关键词：

MILD-STEEL; GREEN INHIBITOR; CARBON-STEEL; HCL SOLUTION; ADSORPTION; CHLORIDE; NICKEL; ZINC; OIL;

D O I：

10.1039/c7ra00111h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The inhibiting ability of the fruiting bodies of Melia azedarach Linn extract (FB-MAL) and its synergistic effect with nickel ions (Ni2+) on the corrosion of carbon (C)-steel in hydrochloric acid were investigated using gravimetric measurements, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). The FB-MAL inhibited C-steel corrosion in acidic media up to 76.5%. Combining the FB-MAL with Ni2+ enhanced the adsorption capability of FB-MAL, greatly and consequently increased its inhibitive effect. Potentiodynamic polarization studies revealed that FB-MAL and FB-MAL + 100 ppm Ni2+ behave as mixed-type inhibitors. The EIS spectra showed that the charge transfer controls the corrosion process. The studied system obeys the Langmuir adsorption isotherm. The kinetic parameters were computed and are discussed later in this paper. The formation of the protective film was confirmed using Fourier transform-infrared spectroscopy, UV-Visible spectroscopy and scanning electron microscopy.

引用

页码：23687 / 23698

页数：12

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