Dendritic zinc growth in acid electrolyte: effect of the pH

In this paper, dendritic growth at the edges of electrogalvanized steel strip has been studied using a specially designed rotating washer electrode which simulates the fluid dynamic conditions and the current density distribution at the steel strip edge found in a production line. The effect of elec...

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Autores principales: Bengoa, Leandro Nicolás, Pary, Paola, Seré, Pablo Ricardo, Conconi, María Susana, Egli, Walter Alfredo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ingeniería en Materiales
Crystal growth
Dendrites
Electrodeposits
Texture
Zinc
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139206
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139206
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería en Materiales
Crystal growth
Dendrites
Electrodeposits
Texture
Zinc
spellingShingle Ingeniería en Materiales
Crystal growth
Dendrites
Electrodeposits
Texture
Zinc
Bengoa, Leandro Nicolás
Pary, Paola
Seré, Pablo Ricardo
Conconi, María Susana
Egli, Walter Alfredo
Dendritic zinc growth in acid electrolyte: effect of the pH
topic_facet Ingeniería en Materiales
Crystal growth
Dendrites
Electrodeposits
Texture
Zinc
description In this paper, dendritic growth at the edges of electrogalvanized steel strip has been studied using a specially designed rotating washer electrode which simulates the fluid dynamic conditions and the current density distribution at the steel strip edge found in a production line. The effect of electrolyte pH and current density on dendritic growth in an acidic zinc plating bath (ZnSO4 and H2SO4) was addressed. The temperature was kept constant at 60 °C. Solution pH was adjusted to 1, 2 or 3 using different amounts of H2SO4. In addition, the influence of temperature on the pH of the solution was determined. The current density was set at 40 or 60 A/dm2, similar to that used in the industry. Deposits were characterized using SEM and XRD. The results showed that pH strongly affects dendrites shape, length and texture. Furthermore, the morphology of dendrites at the washer edge and of deposits on the flat portion of the washer changed considerably as solution pH was increased from 1 to 3. It was found that the morphology of dendrites at the washer edge stems from the morphology of the deposit on its flat portion, which in turn determines their shape.
format Articulo
Articulo
author Bengoa, Leandro Nicolás
Pary, Paola
Seré, Pablo Ricardo
Conconi, María Susana
Egli, Walter Alfredo
author_facet Bengoa, Leandro Nicolás
Pary, Paola
Seré, Pablo Ricardo
Conconi, María Susana
Egli, Walter Alfredo
author_sort Bengoa, Leandro Nicolás
title Dendritic zinc growth in acid electrolyte: effect of the pH
title_short Dendritic zinc growth in acid electrolyte: effect of the pH
title_full Dendritic zinc growth in acid electrolyte: effect of the pH
title_fullStr Dendritic zinc growth in acid electrolyte: effect of the pH
title_full_unstemmed Dendritic zinc growth in acid electrolyte: effect of the pH
title_sort dendritic zinc growth in acid electrolyte: effect of the ph
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/139206
work_keys_str_mv AT bengoaleandronicolas dendriticzincgrowthinacidelectrolyteeffectoftheph
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AT serepabloricardo dendriticzincgrowthinacidelectrolyteeffectoftheph
AT conconimariasusana dendriticzincgrowthinacidelectrolyteeffectoftheph
AT egliwalteralfredo dendriticzincgrowthinacidelectrolyteeffectoftheph
bdutipo_str Repositorios
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