The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/219931 |
Resumo: | The aim of this paper was to determine the influence of machining parameters on the surface layer, and consequently on the electrochemical properties, of ASTM F138 austenitic stainless steels. Eight different surface conditions were generated in cylindrical samples by turning and polishing. The surface was characterized by surface roughness Ra and Rt, Vickers microhardness and microstructural characteristics. Cyclic voltammetric tests were performed to evaluate the potential of repassivation and pitting. The surfaces were analyzed by Scanning Electron Microscopy after the electrochemical tests were performed. The cutting parameters were identified to have a significant influence, and the feed rate was as influential as the depth of cut. The use of polishing alone is not sufficient to ensure that a surface has good surface integrity. Even with the polishing application, usually used to produce prostheses, a significant reduction in corrosion resistance occurs if care is not taken to minimize surface machining damage. Corrosion resistance is lower and pitting nucleation is higher in the samples with no polishing and with more severe machining parameters. The tests indicated that softer machining parameters can contribute to an increase in the life of implantable components, reducing the probability of localized corrosion, as well as improving the mechanical properties of prostheses. |
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Marques, Fernando MichelonRocha, Alexandre da SilvaSantos, Giovanni Rocha dosWolfart Junior, MarioCosta, Rodrigo CardosoFerreira, Jane Zoppas2021-04-15T04:22:20Z20211516-1439http://hdl.handle.net/10183/219931001124059The aim of this paper was to determine the influence of machining parameters on the surface layer, and consequently on the electrochemical properties, of ASTM F138 austenitic stainless steels. Eight different surface conditions were generated in cylindrical samples by turning and polishing. The surface was characterized by surface roughness Ra and Rt, Vickers microhardness and microstructural characteristics. Cyclic voltammetric tests were performed to evaluate the potential of repassivation and pitting. The surfaces were analyzed by Scanning Electron Microscopy after the electrochemical tests were performed. The cutting parameters were identified to have a significant influence, and the feed rate was as influential as the depth of cut. The use of polishing alone is not sufficient to ensure that a surface has good surface integrity. Even with the polishing application, usually used to produce prostheses, a significant reduction in corrosion resistance occurs if care is not taken to minimize surface machining damage. Corrosion resistance is lower and pitting nucleation is higher in the samples with no polishing and with more severe machining parameters. The tests indicated that softer machining parameters can contribute to an increase in the life of implantable components, reducing the probability of localized corrosion, as well as improving the mechanical properties of prostheses.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 24, n. 3 (2021), e20200062, 11 p.Aço inoxidável austeníticoResistência à corrosãoUsinagemStainless steelCorrosionMachining parametersSurface integrityThe influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applicationsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001124059.pdf.txt001124059.pdf.txtExtracted Texttext/plain36661http://www.lume.ufrgs.br/bitstream/10183/219931/2/001124059.pdf.txt85a8cbddb19270100de42664f0232113MD52ORIGINAL001124059.pdfTexto completo (inglês)application/pdf4537160http://www.lume.ufrgs.br/bitstream/10183/219931/1/001124059.pdf8c64901d4178922a56998add8c383ef6MD5110183/2199312021-05-07 04:44:32.273331oai:www.lume.ufrgs.br:10183/219931Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-07T07:44:32Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
title |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
spellingShingle |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications Marques, Fernando Michelon Aço inoxidável austenítico Resistência à corrosão Usinagem Stainless steel Corrosion Machining parameters Surface integrity |
title_short |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
title_full |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
title_fullStr |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
title_full_unstemmed |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
title_sort |
The influence of surface condition on the electrochemical properties of ASTM F138 steel for biomedical applications |
author |
Marques, Fernando Michelon |
author_facet |
Marques, Fernando Michelon Rocha, Alexandre da Silva Santos, Giovanni Rocha dos Wolfart Junior, Mario Costa, Rodrigo Cardoso Ferreira, Jane Zoppas |
author_role |
author |
author2 |
Rocha, Alexandre da Silva Santos, Giovanni Rocha dos Wolfart Junior, Mario Costa, Rodrigo Cardoso Ferreira, Jane Zoppas |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Marques, Fernando Michelon Rocha, Alexandre da Silva Santos, Giovanni Rocha dos Wolfart Junior, Mario Costa, Rodrigo Cardoso Ferreira, Jane Zoppas |
dc.subject.por.fl_str_mv |
Aço inoxidável austenítico Resistência à corrosão Usinagem |
topic |
Aço inoxidável austenítico Resistência à corrosão Usinagem Stainless steel Corrosion Machining parameters Surface integrity |
dc.subject.eng.fl_str_mv |
Stainless steel Corrosion Machining parameters Surface integrity |
description |
The aim of this paper was to determine the influence of machining parameters on the surface layer, and consequently on the electrochemical properties, of ASTM F138 austenitic stainless steels. Eight different surface conditions were generated in cylindrical samples by turning and polishing. The surface was characterized by surface roughness Ra and Rt, Vickers microhardness and microstructural characteristics. Cyclic voltammetric tests were performed to evaluate the potential of repassivation and pitting. The surfaces were analyzed by Scanning Electron Microscopy after the electrochemical tests were performed. The cutting parameters were identified to have a significant influence, and the feed rate was as influential as the depth of cut. The use of polishing alone is not sufficient to ensure that a surface has good surface integrity. Even with the polishing application, usually used to produce prostheses, a significant reduction in corrosion resistance occurs if care is not taken to minimize surface machining damage. Corrosion resistance is lower and pitting nucleation is higher in the samples with no polishing and with more severe machining parameters. The tests indicated that softer machining parameters can contribute to an increase in the life of implantable components, reducing the probability of localized corrosion, as well as improving the mechanical properties of prostheses. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-04-15T04:22:20Z |
dc.date.issued.fl_str_mv |
2021 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/219931 |
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1516-1439 |
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001124059 |
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1516-1439 001124059 |
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http://hdl.handle.net/10183/219931 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 24, n. 3 (2021), e20200062, 11 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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