NATURALLY-OCCURRING ORGANIC-SUBSTANCES AS CORROSION-INHIBITORS FOR MILD-STEEL IN ACID-MEDIUM

Authors
RAHIM MAA HASSAN HB KHALIL MW
Citation
Maa. Rahim et al., NATURALLY-OCCURRING ORGANIC-SUBSTANCES AS CORROSION-INHIBITORS FOR MILD-STEEL IN ACID-MEDIUM, Materialwissenschaft und Werkstofftechnik, 28(2), 1997, pp. 98-102
Citations number
14
Categorie Soggetti
Material Science
Journal title
Materialwissenschaft und Werkstofftechnik → ACNP
ISSN journal
09335137
Volume
28
Issue
2
Year of publication
1997
Pages
98 - 102
Database
ISI
SICI code
0933-5137(1997)28:2<98:NOACFM>2.0.ZU;2-8
Abstract
Inhibition of the corrosion of mild steel in H2SO4 by amino acids was studied by measuring the Tafel polarization curves. Nineteen different naturally occurring amino acids were used as corrosion inhibitors. Tw o-site adsorption model was proposed to explain the adsorption of some amino acids on the metal surface. At 1 x 10(-4) M concentration of in hibitor, the best corrosion inhibition was obtained with the sulphur-c ontaining amino acids. Other amino acids gave various corrosion inhibi tion efficiency depending on their structure.