SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4

This paper describes the use of the Tafel polarization and electrochemical impedance spectroscopy technique (EIS) in order to study the corrosion inhibition process of aluminum in 0.5M H2SO4 solution in presence of propargyl alcohol and zinc sulfate at the open circuit potential (OCP) in the room te...

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Autores principales:	RAVARI,FATEMEH BAGHAEI, DADGAREENEZHAD,ATHAREH
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Electrochemical Techniques Corrosion Aluminum Zinc Sulfate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300013
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spelling	oai:scielo:S0717-970720130003000132014-09-09SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4RAVARI,FATEMEH BAGHAEIDADGAREENEZHAD,ATHAREH Electrochemical Techniques Corrosion Aluminum Zinc Sulfate This paper describes the use of the Tafel polarization and electrochemical impedance spectroscopy technique (EIS) in order to study the corrosion inhibition process of aluminum in 0.5M H2SO4 solution in presence of propargyl alcohol and zinc sulfate at the open circuit potential (OCP) in the room temperature. The Nyquist diagrams consisted of a capacitive semicircle at high frequencies followed by a well defined inductive loop at low frequency values. The impedance measurements were interpreted according to a suitable equivalent circuit. The results obtained showed that the addition of the propargyl alcohol inhibits the sulfuric acid corrosion of the aluminum. The inhibition efficiency increases with an increase in the propargyl alcohol concentration. The inhibition occurs through adsorption of the propargyl alcohol on the metal surface without modifying the mechanism of corrosion process. The inhibiting action propargyl alcohol is considerably enhanced by addition of zinc sulfate. Both the inhibitors obeyed the Langmuir isotherm and the thermodynamic calculations revealed that the adsorption of inhibitors was of physical nature.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.3 20132013-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300013en10.4067/S0717-97072013000300013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Electrochemical Techniques Corrosion Aluminum Zinc Sulfate
spellingShingle	Electrochemical Techniques Corrosion Aluminum Zinc Sulfate RAVARI,FATEMEH BAGHAEI DADGAREENEZHAD,ATHAREH SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4
description	This paper describes the use of the Tafel polarization and electrochemical impedance spectroscopy technique (EIS) in order to study the corrosion inhibition process of aluminum in 0.5M H2SO4 solution in presence of propargyl alcohol and zinc sulfate at the open circuit potential (OCP) in the room temperature. The Nyquist diagrams consisted of a capacitive semicircle at high frequencies followed by a well defined inductive loop at low frequency values. The impedance measurements were interpreted according to a suitable equivalent circuit. The results obtained showed that the addition of the propargyl alcohol inhibits the sulfuric acid corrosion of the aluminum. The inhibition efficiency increases with an increase in the propargyl alcohol concentration. The inhibition occurs through adsorption of the propargyl alcohol on the metal surface without modifying the mechanism of corrosion process. The inhibiting action propargyl alcohol is considerably enhanced by addition of zinc sulfate. Both the inhibitors obeyed the Langmuir isotherm and the thermodynamic calculations revealed that the adsorption of inhibitors was of physical nature.
author	RAVARI,FATEMEH BAGHAEI DADGAREENEZHAD,ATHAREH
author_facet	RAVARI,FATEMEH BAGHAEI DADGAREENEZHAD,ATHAREH
author_sort	RAVARI,FATEMEH BAGHAEI
title	SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4
title_short	SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4
title_full	SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4
title_fullStr	SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4
title_full_unstemmed	SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4
title_sort	synergistic influence of propargyl alcohol and zinc sulfate on inhibition of corrosion of aluminum in 0.5m h2so4
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300013
work_keys_str_mv	AT ravarifatemehbaghaei synergisticinfluenceofpropargylalcoholandzincsulfateoninhibitionofcorrosionofaluminumin05mh2so4 AT dadgareenezhadathareh synergisticinfluenceofpropargylalcoholandzincsulfateoninhibitionofcorrosionofaluminumin05mh2so4
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SYNERGISTIC INFLUENCE OF PROPARGYL ALCOHOL AND ZINC SULFATE ON INHIBITION OF CORROSION OF ALUMINUM IN 0.5M H2SO4

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