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2-Thiophene Carboxaldehyde as Corrosion Inhibitor for Zinc in Phosphoric Acid Solution

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1TitleTitle of Document2-Thiophene Carboxaldehyde as Corrosion Inhibitor for Zinc in Phosphoric Acid Solution
2CreatorAuthor's name, affiliation, country M. BOULKROUNE* and A. CHIBANI
Laboratoire de Chimie Moléculaire, du Contrôle de l’Environnement, et de Mesures physico-chimiques, Université Mentouri, route de Ain El-Bey, Constantine, Algérie
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Corrosion, Inhibition, Zinc, Acid, Thiophene, Adsorption
4DescriptionAbstract The inhibitive effect of 2-thiophene carboxaldehyde (TCAl) on zinc corrosion in 1 M H3PO4 solutions has been studied by weight loss, potentiodynamic polarisation and open-circuit potential (OCP) methods. The obtained results revealed that TCAl is an effective corrosion inhibitor for zinc in H3PO4 solutions. Inhibition efficiency values obtained from gravimetric and electrochemical measurements were in good agreement. The inhibition efficiency increases with increasing inhibitor concentration and decreases with increasing temperature. Potentiodynamic polarisation studies showed that TCAl acts as a mixed type inhibitor. Scanning electron microscopy (SEM), OCP measurements and the thermodynamic data of dissolution and adsorption processes showed that inhibition of zinc corrosion in phosphoric acid solutions by TCAl is due to the formation of a physisorbed film on the zinc surface. Adsorption of the compound studied on zinc surface obeys to Langmuir adsorption isotherm.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  1 , Number  (2), (2012)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
15CopyrightCopyright and permissions
Chemical Science Transactions | Chem Sci Trans | CST | Online Chemistry Journal | Open Access
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