Caracterização da superfície de zamac 5 anodizado
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Research, Society and Development |
Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/37702 |
Resumo: | Zamak is a Zn-Al-based metal alloy that has proven to be extremely versatile. This alloy has a low melting point and excellent fluidity, which makes it possible to obtain parts of complex geometry on a large scale, through the pressure casting process. However, the manufacturing process generates gaseous porosities inside the parts, which makes the alloy present a corrosion resistance lower than the minimum established by NBR 10283 regarding the surface of sanitary metals. The objective of this work is to characterize the surface of Zamak 5 injected under pressure after being subjected to the anodizing process. To carry out the proposed analysis, Zamak 5 samples were injected under pressure and subjected to different anodizing times: 20, 50, 110, 300, 1800 and 3600 seconds. The samples were analyzed with scanning electron microscopy (SEM), microhardness, roughness and potentiodynamic polarization assay. The results showed that the Zamak before the anodizing process presented greater corrosion resistance than after this treatment. This can be explained by the preparation process for anodizing, which makes the part more susceptible to corrosion and by the appearance of cracks and cracks that appeared with the anodizing process. However, among the anodized samples, the longer the anodizing time, the more noble its behavior became. It was found that the surface layer is composed of oxalates and oxides of zinc and aluminum. This surface layer showed an increase in hardness and surface roughness. |
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Caracterização da superfície de zamac 5 anodizado Surface characterization of anodized zamac 5 Caracterización superficial de zamac anodizado 5 ZamakAnodizingZn-Al.ZamacAnodizadoZn-Al.ZamacAnodizaçãoZn-Al.Zamak is a Zn-Al-based metal alloy that has proven to be extremely versatile. This alloy has a low melting point and excellent fluidity, which makes it possible to obtain parts of complex geometry on a large scale, through the pressure casting process. However, the manufacturing process generates gaseous porosities inside the parts, which makes the alloy present a corrosion resistance lower than the minimum established by NBR 10283 regarding the surface of sanitary metals. The objective of this work is to characterize the surface of Zamak 5 injected under pressure after being subjected to the anodizing process. To carry out the proposed analysis, Zamak 5 samples were injected under pressure and subjected to different anodizing times: 20, 50, 110, 300, 1800 and 3600 seconds. The samples were analyzed with scanning electron microscopy (SEM), microhardness, roughness and potentiodynamic polarization assay. The results showed that the Zamak before the anodizing process presented greater corrosion resistance than after this treatment. This can be explained by the preparation process for anodizing, which makes the part more susceptible to corrosion and by the appearance of cracks and cracks that appeared with the anodizing process. However, among the anodized samples, the longer the anodizing time, the more noble its behavior became. It was found that the surface layer is composed of oxalates and oxides of zinc and aluminum. This surface layer showed an increase in hardness and surface roughness.Zamac es una aleación de metal a base de Zn-Al que ha demostrado ser extremadamente versátil. Esta aleación tiene un bajo punto de fusión y una excelente fluidez, lo que permite obtener piezas de geometría compleja a gran escala, mediante el proceso de fundición a presión. Sin embargo, el proceso de fabricación genera porosidades gaseosas en el interior de las piezas, lo que hace que la aleación presente una resistencia a la corrosión inferior al mínimo establecido por la NBR 10283 con respecto a la superficie de los metales sanitarios. El objetivo de este trabajo es caracterizar la superficie de Zamac 5 inyectado a presión luego de ser sometido al proceso de anodizado. Para llevar a cabo el análisis propuesto, se inyectaron muestras de Zamac 5 a presión y se sometieron a diferentes tiempos de anodizado: 20, 50, 110, 300, 1800 y 3600 segundos. Las muestras se analizaron con microscopía electrónica de barrido (SEM), microdureza, rugosidad y ensayo de polarización potenciodinámica. Los resultados mostraron que el Zamac antes del proceso de anodizado presentó mayor resistencia a la corrosión que después de este tratamiento. Esto se puede explicar por el proceso de preparación para el anodizado, que hace que la pieza sea más susceptible a la corrosión y por la aparición de grietas y grietas que aparecieron con el proceso de anodizado. Sin embargo, entre las muestras anodizadas, cuanto mayor era el tiempo de anodizado, más noble se volvía su comportamiento. Se encontró que la capa superficial está compuesta por oxalatos y óxidos de zinc y aluminio. Esta capa superficial mostró un aumento en la dureza y rugosidad superficial.O Zamac é uma liga metálica de base Zn-Al que tem se mostrado extremamente versátil. Esta liga apresenta baixo ponto de fusão e ótima fluidez, o que possibilita obtenção de peças de geometria complexa em larga escala, através do processo de fundição sob pressão. Entretanto, o processo de fabricação gera porosidades gasosas no interior das peças, que faz com que a liga apresente uma resistência à corrosão inferior ao mínimo estabelecido pela NBR 10283 referente à superfície dos metais sanitários. O objetivo deste trabalho é caracterizar a superfície do Zamac 5 injetado sob pressão após ser submetido ao processo de anodização. Para realizar a análise proposta, foram empregadas amostras de Zamac 5 injetadas sob pressão e submetidas em diferentes tempos de anodização: 20, 50, 110, 300, 1800 e 3600 segundos. As amostras foram analisadas com microscopia eletrônica de varredura (MEV), ensaio de microdureza, rugosidade e polarização potenciodinâmica. Os resultados mostraram que o Zamac antes do processo de anodização apresentava maior resistência a corrosão do que após este tratamento. Isto pode ser explicado pelo processo de preparação para a anodização, o qual torna a peça mais suscetível à corrosão e pelo surgimento de trincas e rachaduras que surgiram com o processo de anodização. Entretanto, entre as amostras anodizadas, quanto maior o tempo de anodização, mais nobre tornava-se o seu comportamento. Foi verificado que a camada superficial é composta por oxalatos e óxidos de zinco e alumínio. Esta camada superficial evidenciou aumento da dureza e da rugosidade superficial.Research, Society and Development2022-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/3770210.33448/rsd-v11i16.37702Research, Society and Development; Vol. 11 No. 16; e61111637702Research, Society and Development; Vol. 11 Núm. 16; e61111637702Research, Society and Development; v. 11 n. 16; e611116377022525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/37702/31407Copyright (c) 2022 Felipe Rangel Milcharek; Sandra Raquel Kunst; Cláudia Trindade Oliveira; Pedro Carlos Hernandez Junior https://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMilcharek, Felipe Rangel Kunst, Sandra RaquelOliveira, Cláudia Trindade Hernandez Junior , Pedro Carlos 2022-12-18T18:26:42Zoai:ojs.pkp.sfu.ca:article/37702Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:51:46.358086Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
dc.title.none.fl_str_mv |
Caracterização da superfície de zamac 5 anodizado Surface characterization of anodized zamac 5 Caracterización superficial de zamac anodizado 5 |
title |
Caracterização da superfície de zamac 5 anodizado |
spellingShingle |
Caracterização da superfície de zamac 5 anodizado Milcharek, Felipe Rangel Zamak Anodizing Zn-Al. Zamac Anodizado Zn-Al. Zamac Anodização Zn-Al. |
title_short |
Caracterização da superfície de zamac 5 anodizado |
title_full |
Caracterização da superfície de zamac 5 anodizado |
title_fullStr |
Caracterização da superfície de zamac 5 anodizado |
title_full_unstemmed |
Caracterização da superfície de zamac 5 anodizado |
title_sort |
Caracterização da superfície de zamac 5 anodizado |
author |
Milcharek, Felipe Rangel |
author_facet |
Milcharek, Felipe Rangel Kunst, Sandra Raquel Oliveira, Cláudia Trindade Hernandez Junior , Pedro Carlos |
author_role |
author |
author2 |
Kunst, Sandra Raquel Oliveira, Cláudia Trindade Hernandez Junior , Pedro Carlos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Milcharek, Felipe Rangel Kunst, Sandra Raquel Oliveira, Cláudia Trindade Hernandez Junior , Pedro Carlos |
dc.subject.por.fl_str_mv |
Zamak Anodizing Zn-Al. Zamac Anodizado Zn-Al. Zamac Anodização Zn-Al. |
topic |
Zamak Anodizing Zn-Al. Zamac Anodizado Zn-Al. Zamac Anodização Zn-Al. |
description |
Zamak is a Zn-Al-based metal alloy that has proven to be extremely versatile. This alloy has a low melting point and excellent fluidity, which makes it possible to obtain parts of complex geometry on a large scale, through the pressure casting process. However, the manufacturing process generates gaseous porosities inside the parts, which makes the alloy present a corrosion resistance lower than the minimum established by NBR 10283 regarding the surface of sanitary metals. The objective of this work is to characterize the surface of Zamak 5 injected under pressure after being subjected to the anodizing process. To carry out the proposed analysis, Zamak 5 samples were injected under pressure and subjected to different anodizing times: 20, 50, 110, 300, 1800 and 3600 seconds. The samples were analyzed with scanning electron microscopy (SEM), microhardness, roughness and potentiodynamic polarization assay. The results showed that the Zamak before the anodizing process presented greater corrosion resistance than after this treatment. This can be explained by the preparation process for anodizing, which makes the part more susceptible to corrosion and by the appearance of cracks and cracks that appeared with the anodizing process. However, among the anodized samples, the longer the anodizing time, the more noble its behavior became. It was found that the surface layer is composed of oxalates and oxides of zinc and aluminum. This surface layer showed an increase in hardness and surface roughness. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-29 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/37702 10.33448/rsd-v11i16.37702 |
url |
https://rsdjournal.org/index.php/rsd/article/view/37702 |
identifier_str_mv |
10.33448/rsd-v11i16.37702 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/37702/31407 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Research, Society and Development |
publisher.none.fl_str_mv |
Research, Society and Development |
dc.source.none.fl_str_mv |
Research, Society and Development; Vol. 11 No. 16; e61111637702 Research, Society and Development; Vol. 11 Núm. 16; e61111637702 Research, Society and Development; v. 11 n. 16; e61111637702 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
instname_str |
Universidade Federal de Itajubá (UNIFEI) |
instacron_str |
UNIFEI |
institution |
UNIFEI |
reponame_str |
Research, Society and Development |
collection |
Research, Society and Development |
repository.name.fl_str_mv |
Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
repository.mail.fl_str_mv |
rsd.articles@gmail.com |
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1797052774802784256 |