Article ID Journal Published Year Pages File Type
1469942 Corrosion Science 2012 9 Pages PDF
Abstract

The inhibition effect of Ginkgo leaves extract (GLE) on the corrosion of cold rolled steel (CRS) in 1.0–5.0 M HCl and 0.5–2.5 M H2SO4 solutions was investigated for the first time by weight loss, potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) methods. The results show that GLE is a good inhibitor, and exhibits more efficient in 1.0 M HCl than 0.5 M H2SO4. The adsorption of GLE on CRS surface obeys Langmuir adsorption isotherm. GLE acts as a mixed-type inhibitor in 1.0 M HCl, while a cathodic inhibitor in 0.5 M H2SO4.

► Ginkgo leaves extract (GLE) acts as a good inhibitor for steel in HCl and H2SO4 media. ► The inhibition efficiency follows the order: HCl > H2SO4. ► The adsorption of GLE on steel surface obeys Langmuir adsorption isotherm. ► GLE behaves as a mixed-type inhibitor in 1.0 M HCl, while cathodic inhibitor in 0.5 M H2SO4.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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