CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS

In this work, the resistance to corrosion of chromium films obtained from trivalent chromium solutions of different compositions and the influence of solution compounds on the coatings electrochemical behavior and the microstructure were studied. The chromium coatings were obtained from trivalent so...

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Autores principales:	SUAREZ,O.J, OLAYA,J. J, SUAREZ,M.F, RODIL,S.E
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2012
Materias:	Trivalent chromium plating microstructure corrosion resistance
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100005
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spelling	oai:scielo:S0717-970720120001000052012-07-19CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONSSUAREZ,O.JOLAYA,J. JSUAREZ,M.FRODIL,S.E Trivalent chromium plating microstructure corrosion resistance In this work, the resistance to corrosion of chromium films obtained from trivalent chromium solutions of different compositions and the influence of solution compounds on the coatings electrochemical behavior and the microstructure were studied. The chromium coatings were obtained from trivalent solutions in a chloride-based bath with different complexing agents adding also sodium hypophosphite and aluminum chloride. UV-vis spectroscopy was carried out on all solutions before and after plating to observe changes in the chromium complexes chemical state due to the plating process. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) were performed to examine the coatings surface morphology and composition; respectively. The coulometric method was used for measuring coating thickness. Electrochemical impedance spectroscopy (EIS) was done using 3% NaCl as electrolyte and using a three-electrode cell with a standard calomel electrode (SCE) as reference. Bright chromium films were obtained from all baths however, differences were observed concerning morphology, thickness and corrosion resistance depending on the composition of the forming solution.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.57 n.1 20122012-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100005en10.4067/S0717-97072012000100005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Trivalent chromium plating microstructure corrosion resistance
spellingShingle	Trivalent chromium plating microstructure corrosion resistance SUAREZ,O.J OLAYA,J. J SUAREZ,M.F RODIL,S.E CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS
description	In this work, the resistance to corrosion of chromium films obtained from trivalent chromium solutions of different compositions and the influence of solution compounds on the coatings electrochemical behavior and the microstructure were studied. The chromium coatings were obtained from trivalent solutions in a chloride-based bath with different complexing agents adding also sodium hypophosphite and aluminum chloride. UV-vis spectroscopy was carried out on all solutions before and after plating to observe changes in the chromium complexes chemical state due to the plating process. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) were performed to examine the coatings surface morphology and composition; respectively. The coulometric method was used for measuring coating thickness. Electrochemical impedance spectroscopy (EIS) was done using 3% NaCl as electrolyte and using a three-electrode cell with a standard calomel electrode (SCE) as reference. Bright chromium films were obtained from all baths however, differences were observed concerning morphology, thickness and corrosion resistance depending on the composition of the forming solution.
author	SUAREZ,O.J OLAYA,J. J SUAREZ,M.F RODIL,S.E
author_facet	SUAREZ,O.J OLAYA,J. J SUAREZ,M.F RODIL,S.E
author_sort	SUAREZ,O.J
title	CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS
title_short	CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS
title_full	CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS
title_fullStr	CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS
title_full_unstemmed	CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS
title_sort	corrosion resistance of decorative chromium films obtained from trivalent chromium solutions
publisher	Sociedad Chilena de Química
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100005
work_keys_str_mv	AT suarezoj corrosionresistanceofdecorativechromiumfilmsobtainedfromtrivalentchromiumsolutions AT olayajj corrosionresistanceofdecorativechromiumfilmsobtainedfromtrivalentchromiumsolutions AT suarezmf corrosionresistanceofdecorativechromiumfilmsobtainedfromtrivalentchromiumsolutions AT rodilse corrosionresistanceofdecorativechromiumfilmsobtainedfromtrivalentchromiumsolutions
_version_	1718445459111936000

CORROSION RESISTANCE OF DECORATIVE CHROMIUM FILMS OBTAINED FROM TRIVALENT CHROMIUM SOLUTIONS

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