A descriptive study for corrosion control of low-alloy steel by Aloe vera extract in acidic medium

被引：19

作者：

Dahiya, Shefali ^{[1
]}

Lata, Suman ^{[1
]}

Kumar, Parmod ^{[1
]}

Kumar, Rajeev ^{[1
]}

机构：

[1] Deenbandhu Chhotu Ram Univ Sci & Technol, Sonipat 131001, Haryana, India

来源：

CORROSION REVIEWS | 2016年 / 34卷 / 04期

关键词：

adsorption; Aloe vera; corrosion; inhibition; MILD-STEEL; LEAVES EXTRACT; INHIBITION;

D O I：

10.1515/corrrev-2016-0015

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Methanol extract of Aloe vera leaves (AE) as a green inhibitor for controlling corrosion of low-alloy steel (mild steel) in 0.5 m HCl solution was studied using gravimetric analysis, potentiostatic polarization measurements, electrochemical impedance spectroscopy and quantum analysis. The results obtained revealed that AE has fairly good inhibiting properties against corrosion of mild steel in 0.5 m HCl solution, with efficiency >97%. Also, the inhibition was mixed type that follows the Langmuir adsorption isotherm. The value of Delta G reveals that AE inhibits the corrosion rate via physical type adsorption on the mild steel surface which is further supported by Dubinin-Radushkevich isotherm.

引用

页码：241 / 248

页数：8

共 28 条

[21] An analysis of the influence of growth periods on physical appearance, and acemannan and elemental distribution of Aloe vera L. gel [J].

Ray, Anirban ;

Aswatha, Shashaank M. .

INDUSTRIAL CROPS AND PRODUCTS, 2013, 48 :36-42

[22] Emblica Officinalis (Indian Gooseberry) Leaves Extract as Corrosion Inhibitor for Mild Steel in 1N HCl Medium [J].

Saratha, R. ;

Vasudha, V. G. .

E-JOURNAL OF CHEMISTRY, 2010, 7 (03) :677-684

[23] Molecular orbital theoretical studies of some organic corrosion inhibitors [J].

Sastri, VS ;

Perumareddi, JR .

CORROSION, 1997, 53 (08) :617-622

[24]

Sharrif M. M., 2011, INT J BIOL MED RES, V2, P466

[25] The effects of pharmaceutically active compound doxycycline on the corrosion of mild steel in hydrochloric acid solution [J].

Shukla, Sudhish Kumar ;

Quraishi, M. A. .

CORROSION SCIENCE, 2010, 52 (02) :314-321

[26] Corrosion inhibition effect of Aloe Vera gel: Gravimetric and electrochemical study [J].

Singh, A. K. ;

Mohapatra, S. ;

Pani, B. .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2016, 33 :288-297

[27] Corrosion Inhibition of Carbon Steel in HCl Solution by Some Plant Extracts [J].

Singh, Ambrish ;

Ebenso, Eno E. ;

Quraishi, M. A. .

INTERNATIONAL JOURNAL OF CORROSION, 2012, 2012 (2012)

[28]

Tuaweri T.J., 2015, IJRET, V4, P404, DOI DOI 10.15623/IJRET.2015.0406069

← 1 2 3 →