THERMODYNAMIC STUDY OF CORROSION AND INHIBITOR ADSORPTION PROCESSES ONTO C38 STEEL/PIPERAZINES/PHOSPHORIC ACID SYSTEMS

A. Ousslim, A. Ouniti, K. Bekkouch, A. Elidrissi and B. Hammouti ()
Additional contact information
A. Ousslim: Laboratoire de Chimie Solide Minérale, Faculté des Sciences, 60,000 Oujda, Morocco;
A. Ouniti: Laboratoire de Chimie Appliquée & Environnement, Faculté des Sciences, 60,000 Oujda, Morocco
K. Bekkouch: Laboratoire de Chimie Solide Minérale, Faculté des Sciences, 60,000 Oujda, Morocco
A. Elidrissi: Laboratoire de Chimie Appliquée & Environnement, Faculté des Sciences, 60,000 Oujda, Morocco
B. Hammouti: Laboratoire de Chimie Appliquée & Environnement, Faculté des Sciences, 60,000 Oujda, Morocco

Surface Review and Letters (SRL), 2009, vol. 16, issue 04, 609-615

Abstract: This paper describes the inhibition effect of 1-benzyl piperazine (P1) and bis(1-benzyl piperazine) thiuram disulfide (P2) towards the corrosion of C38 steel in 5.5 MH3PO4solution by potentiodynamic polarization and weight loss methods. The influence of inhibitor concentration and temperature on inhibitory behavior of P2 were investigated. The inhibition efficiency (IE) was found to be dependent on the type of piperazine and its concentration. The IE for 10-3M P2 in 5.5 MH3PO4is greater than 98%. Polarization studies clearly revealed that both P1 and P2 act as mixed-type inhibitors. Adsorption isotherms were fitted by the Langmuir isotherm. Adsorption energies ($\Delta G^{\circ}_{{\rm ads}}$and$\Delta H^{\circ}_{{\rm ads}}$) were evaluated. Kinetic parameters were determined.

Keywords: Corrosion; inhibition; piperazine; carbon steel (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X09012949
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:16:y:2009:i:04:n:s0218625x09012949

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X09012949

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().