Khadija HNINI et al. (2008) The Inhibition Effect of Heterocyclic Compounds Towards the Corrosion of Iron in Phosphoric Media

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The Inhibition Effect of Heterocyclic Compounds Towards the Corrosion of Iron in Phosphoric Media

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CONTRIBUTORS:

	Author:	Khadija HNINI
	Author:	Salah FADEL
	Author:	Molay Abderrahim EL MHAMMEDI
	Author:	Abdelilah CHTAINI
	Author:	El Mostapha RAKIB

JOURNAL:

Leonardo Electronic Journal of Practices and Technologies, 7(12), 1 - 14.

YEAR:

2008

PUB TYPE:

Journal Article

SUBJECT(S):

chemistry - physical

DISCIPLINE:

Chemistry

HTTP:

http://lejpt.academicdirect.org/A12/001_014.htm

LANGUAGE:

English

PUB ID:

103-447-373 (Last edited on 2009/01/17 05:24:05 US/Mountain)

SPONSOR(S):

ABSTRACT:
The behaviour of the 316 stainless steel in polluted phosphoric acid, has been studied in absence and presence of [(4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-phenyl-methyl]-urea (HPU1) and [(4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-(4-methoxy-phenyl)-methyl]-urea (HPU2) at different concentrations, Potentiodynamic and electrochemical impedance measurements showed that these compound act as cathodic inhibitors, The SEM analysis showed that theses inhibitors acts by establishment of a thin film at the metal surface. The film, act as a barrier to the transport of the metal ions from the metal to the solution at high concentration of inhibitor.

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