5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION

Using the electrochemical linear polarization resistance technique, 5-amino-1,3,4-thiadiazole-2-thiol corrosion current density on ASTM A-890-1B steel is determined in a 3.5% NaC1 solution at different temperatures. The corrosion inhibition process is mixed. Apparent activation energy is calculated,...

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Autores principales:	GUZMÁN,M, LARA,R, VERA,L
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2009
Materias:	inhibitor corrosion duplex stainless steel potentiodynamic polarization adsorption isotherm
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200005
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spelling	oai:scielo:S0717-970720090002000052009-10-075-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTIONGUZMÁN,MLARA,RVERA,L inhibitor corrosion duplex stainless steel potentiodynamic polarization adsorption isotherm Using the electrochemical linear polarization resistance technique, 5-amino-1,3,4-thiadiazole-2-thiol corrosion current density on ASTM A-890-1B steel is determined in a 3.5% NaC1 solution at different temperatures. The corrosion inhibition process is mixed. Apparent activation energy is calculated, being the one with inhibitor slightly greater than that without it. Adsorption matches Damaskin-Parsons isotherm, showing that molecules adsorbed by the metal surface reject each other. Three water molecules on the metal surface are replaced by one inhibitor molecule. This is demonstrated by calculating the surface these molecules project. Normal thermodynamic adsorption parameters are calculated, showing that the process is spontaneous and exothermic. Inhibitor adsorption on the metal surface is a chemical adsorption.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.54 n.2 20092009-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200005en10.4067/S0717-97072009000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	inhibitor corrosion duplex stainless steel potentiodynamic polarization adsorption isotherm
spellingShingle	inhibitor corrosion duplex stainless steel potentiodynamic polarization adsorption isotherm GUZMÁN,M LARA,R VERA,L 5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION
description	Using the electrochemical linear polarization resistance technique, 5-amino-1,3,4-thiadiazole-2-thiol corrosion current density on ASTM A-890-1B steel is determined in a 3.5% NaC1 solution at different temperatures. The corrosion inhibition process is mixed. Apparent activation energy is calculated, being the one with inhibitor slightly greater than that without it. Adsorption matches Damaskin-Parsons isotherm, showing that molecules adsorbed by the metal surface reject each other. Three water molecules on the metal surface are replaced by one inhibitor molecule. This is demonstrated by calculating the surface these molecules project. Normal thermodynamic adsorption parameters are calculated, showing that the process is spontaneous and exothermic. Inhibitor adsorption on the metal surface is a chemical adsorption.
author	GUZMÁN,M LARA,R VERA,L
author_facet	GUZMÁN,M LARA,R VERA,L
author_sort	GUZMÁN,M
title	5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION
title_short	5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION
title_full	5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION
title_fullStr	5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION
title_full_unstemmed	5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION
title_sort	5-amino-1,3,4-thiadiazole-2-thiol corrosion current density and adsorption thermodynamics on astm a-890-1b stainless steel in a 3.5% nac1 solution
publisher	Sociedad Chilena de Química
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200005
work_keys_str_mv	AT guzmanm 5amino134thiadiazole2thiolcorrosioncurrentdensityandadsorptionthermodynamicsonastma8901bstainlesssteelina35nac1solution AT larar 5amino134thiadiazole2thiolcorrosioncurrentdensityandadsorptionthermodynamicsonastma8901bstainlesssteelina35nac1solution AT veral 5amino134thiadiazole2thiolcorrosioncurrentdensityandadsorptionthermodynamicsonastma8901bstainlesssteelina35nac1solution
_version_	1718445402023264256

5-AMINO-1,3,4-THIADIAZOLE-2-THIOL CORROSION CURRENT DENSITY AND ADSORPTION THERMODYNAMICS ON ASTM A-890-1B STAINLESS STEEL IN A 3.5% NaC1 SOLUTION

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