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Inhibition of 304 stainless steel corrosion in acidic solution by Ferula gumosa (galbanum) extract

✍ Scribed by M. Behpour; S. M. Ghoreishi; M. Khayat Kashani; N. Soltani

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
129 KB
Volume
60
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

The inhibition effect of the extract of galbanum (Ferula gummosa Boiss.) on the corrosion of 304 stainless steel in 2 M HCl solution was studied by weight loss measurements, Tafel polarization, and electrochemical impedance spectroscopy (EIS) methods. It was found that the inhibition efficiency (IE) increases as the extract concentration is increased. Tafel polarization method revealed the mixed mode inhibition of galbanum extract (GE) with predominant control of anodic reaction. The effect of temperature on the corrosion behavior of steel indicates that inhibition efficiency of the natural substance increases with the rise in temperature. At all temperatures, the adsorption of the extract components onto the steel surface was found to follow the Temkin adsorption isotherm.

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