Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation
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/10183/223381 |
Resumo: | The rapid bio-corrosion of magnesium-based alloys, the formation of hydrogen gas and, consequently, the premature loss of biomechanical functions hinder their applications as biodegradable implant materials. The corrosion becomes even accelerated, when fretting wear occurs at implant junctions, as a result of repeated disruptions of the magnesium (hydr)oxide layer formed on implant surfaces. To improve the overall performance of these materials in a bio-relevant environment, especially corrosion resistance and wear resistance, in this research, plasma electrolytic oxidation (PEO) was applied to create a coating on a magnesium alloy, ZK30. The resulting gains in corrosion resistance and wear resistance were evaluated. In vitro immersion tests in Hank’s solution at 37 ◦C showed a reduction in hydrogen release from the PEO-treated alloy. The results obtained from applying the scanning vibrating electrode technique (SVET) indicated a decreased susceptibility of the PEO- treated alloy to localized corrosion, accounting for the improved corrosion resistance. In addition, PEO was found to change the surface topography and roughness, in addition to surface chemistry, which contributed to an increased but stable coefficient of friction and a decreased material removal rate, as revealed by the tribological tests with a ball-on-plate configuration. The results indicate an enlarged opportunity of magnesium-based ma-terials for orthopedic applications, where friction and wear are involved, by applying PEO. |
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Rodrigues, Joel da SilvaAntonini, Leonardo MarascaBastos, António Alexandre CunhaZhou, JieMalfatti, Célia de Fraga2021-07-07T04:36:39Z20210257-8972http://hdl.handle.net/10183/223381001127797The rapid bio-corrosion of magnesium-based alloys, the formation of hydrogen gas and, consequently, the premature loss of biomechanical functions hinder their applications as biodegradable implant materials. The corrosion becomes even accelerated, when fretting wear occurs at implant junctions, as a result of repeated disruptions of the magnesium (hydr)oxide layer formed on implant surfaces. To improve the overall performance of these materials in a bio-relevant environment, especially corrosion resistance and wear resistance, in this research, plasma electrolytic oxidation (PEO) was applied to create a coating on a magnesium alloy, ZK30. The resulting gains in corrosion resistance and wear resistance were evaluated. In vitro immersion tests in Hank’s solution at 37 ◦C showed a reduction in hydrogen release from the PEO-treated alloy. The results obtained from applying the scanning vibrating electrode technique (SVET) indicated a decreased susceptibility of the PEO- treated alloy to localized corrosion, accounting for the improved corrosion resistance. In addition, PEO was found to change the surface topography and roughness, in addition to surface chemistry, which contributed to an increased but stable coefficient of friction and a decreased material removal rate, as revealed by the tribological tests with a ball-on-plate configuration. The results indicate an enlarged opportunity of magnesium-based ma-terials for orthopedic applications, where friction and wear are involved, by applying PEO.application/pdfengSurface and coatings technology. Lausanne. Vol. 410 (Mar. 2021), Art. 126983, p. 1-12Ligas de magnésioRevestimentoResistência à corrosãoResistência ao desgasteMagnesiumBiodegradationPEOCorrosionWearCorrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001127797.pdf.txt001127797.pdf.txtExtracted Texttext/plain53086http://www.lume.ufrgs.br/bitstream/10183/223381/2/001127797.pdf.txt2379f37651bd088d73e236748694ecbaMD52ORIGINAL001127797.pdfTexto completo (inglês)application/pdf12159266http://www.lume.ufrgs.br/bitstream/10183/223381/1/001127797.pdfcc5a821df93ede5236450fdd8536e343MD5110183/2233812021-08-04 04:46:52.378435oai:www.lume.ufrgs.br:10183/223381Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-08-04T07:46:52Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
title |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
spellingShingle |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation Rodrigues, Joel da Silva Ligas de magnésio Revestimento Resistência à corrosão Resistência ao desgaste Magnesium Biodegradation PEO Corrosion Wear |
title_short |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
title_full |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
title_fullStr |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
title_full_unstemmed |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
title_sort |
Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation |
author |
Rodrigues, Joel da Silva |
author_facet |
Rodrigues, Joel da Silva Antonini, Leonardo Marasca Bastos, António Alexandre Cunha Zhou, Jie Malfatti, Célia de Fraga |
author_role |
author |
author2 |
Antonini, Leonardo Marasca Bastos, António Alexandre Cunha Zhou, Jie Malfatti, Célia de Fraga |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rodrigues, Joel da Silva Antonini, Leonardo Marasca Bastos, António Alexandre Cunha Zhou, Jie Malfatti, Célia de Fraga |
dc.subject.por.fl_str_mv |
Ligas de magnésio Revestimento Resistência à corrosão Resistência ao desgaste |
topic |
Ligas de magnésio Revestimento Resistência à corrosão Resistência ao desgaste Magnesium Biodegradation PEO Corrosion Wear |
dc.subject.eng.fl_str_mv |
Magnesium Biodegradation PEO Corrosion Wear |
description |
The rapid bio-corrosion of magnesium-based alloys, the formation of hydrogen gas and, consequently, the premature loss of biomechanical functions hinder their applications as biodegradable implant materials. The corrosion becomes even accelerated, when fretting wear occurs at implant junctions, as a result of repeated disruptions of the magnesium (hydr)oxide layer formed on implant surfaces. To improve the overall performance of these materials in a bio-relevant environment, especially corrosion resistance and wear resistance, in this research, plasma electrolytic oxidation (PEO) was applied to create a coating on a magnesium alloy, ZK30. The resulting gains in corrosion resistance and wear resistance were evaluated. In vitro immersion tests in Hank’s solution at 37 ◦C showed a reduction in hydrogen release from the PEO-treated alloy. The results obtained from applying the scanning vibrating electrode technique (SVET) indicated a decreased susceptibility of the PEO- treated alloy to localized corrosion, accounting for the improved corrosion resistance. In addition, PEO was found to change the surface topography and roughness, in addition to surface chemistry, which contributed to an increased but stable coefficient of friction and a decreased material removal rate, as revealed by the tribological tests with a ball-on-plate configuration. The results indicate an enlarged opportunity of magnesium-based ma-terials for orthopedic applications, where friction and wear are involved, by applying PEO. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-07-07T04:36:39Z |
dc.date.issued.fl_str_mv |
2021 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10183/223381 |
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0257-8972 |
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001127797 |
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http://hdl.handle.net/10183/223381 |
dc.language.iso.fl_str_mv |
eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Surface and coatings technology. Lausanne. Vol. 410 (Mar. 2021), Art. 126983, p. 1-12 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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