Corrosion resistance and tribological behavior of ZK30 magnesium alloy coated by plasma electrolytic oxidation

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Joel da Silva
Data de Publicação: 2021
Outros Autores: Antonini, Leonardo Marasca, Bastos, António Alexandre Cunha, Zhou, Jie, Malfatti, Célia de Fraga
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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spelling 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
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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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