Title

GREEN CORROSION INHIBITIONS FOR 1045 AND 1080 CARBON STEELS BY GARLIC IN DYNAMIC CONDITIONS FOR IN SULPHURIC ACID MEDIA

Author

EDELMIRA RODRIGUEZ CLEMENTE

AMERICA MARIA RAMIREZ ARTEAGA

MANUEL EDUARDO PALOMAR PARDAVE

JOSE GUADALUPE CHACON NAVA

Access level

Open Access

Summary or description

Abstract

Previous studies showed the adequate efficiency of green corrosion inhibition of 1018

carbon steel in 0.5 M H2SO4 by garlic extract (Allium sativum) in static conditions at 25 °C.

In this condition, the inhibition efficiency was 95 % at 400 ppm. Another study under

similar conditions, showed an inhibition efficiency of 80% for 1045 steel (with 800 ppm

inhibitor) and 70% for 1080 steel (with 400 ppm inhibitor). Here, the effect of dynamic

conditions in the corrosion inhibition by garlic extract for these steels exposed in 0.5 M

H2SO4 at 25 °C was investigated. In order to investigate the effect of dynamic conditions, a

rotating cylinder electrode was used at 0, 250, 500, 1000 and 2000 rpm. The inhibitor

efficiency was obtained by potentiodynamic polarization measurements and spectroscopy

electrochemical impedance. The results indicated that the green inhibitor efficiency

behaves somewhat different for both carbon steels in particular at 2000 rpm. In this

condition, the inhibition efficiency was 77% for the 1080 carbon steel and 95 % for the

1045 carbon steel. According to the electrochemical tests in the present work, it seems that

the garlic extract acts for both steels as a mixed type green inhibitor. This research shows

that the garlic extract is a good candidate as a green inhibitor to be used in new possible

environmental friendly corrosion inhibitor formulations

Publish date

2015

Publication type

Conference proceedings

Publication version

Submitted Version

Format

application/pdf

Language

English

Source repository

Fuente de Objetos Científicos Open Access

Downloads

177

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