Surface investigation of a laser etched metallic biomaterial

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dc.contributor.authorPIERETTI, EURICO F.
dc.contributor.authorNEVES, MAURICIO D.M.
dc.contributor.authorCORREA, OLANDIR V.
dc.contributor.authorANTUNES, RENATO A.
dc.contributor.authorOLIVEIRA, MARA C.L.
dc.contributor.authorPILLIS, MARINA F.
dc.coverageInternacional
dc.creator.eventoLATIN-AMERICAN CONGRESS OF ARTIFICIAL ORGANS AND BIOMATERIALS, 12th
dc.date.accessioned2024-03-15T16:54:19Z
dc.date.available2024-03-15T16:54:19Z
dc.date.eventoDecember 12-15, 2023
dc.description.abstractIntroduction and objective: Surface treatments are used to improve characteristics, such as: markings, texturing and polishing. The texturizations are produced to provide roughness and, consequently, adherence in specific locations of implantable medical devices of permanent character, that is, implants of prolonged use. Sometimes this process can generate stress concentrators and regions with probability for the occurrence of failures that can lead to fracture; in addition to damaging the passive layer, favouring the initiation of various forms of corrosion [1]. This work aims to evaluate the effect of the laser beam texturing technique in metallic implants on the corrosion resistance of ASTM 316L stainless steel. Methodology: Samples were prepared from the stainless steel textured by fiber optic laser doped with ytterbium (Yb) by changing the values of the frequency of the laser pulse cadence and keeping the other parameters constant. As a comparison, samples of the biomaterial without any type of laser treatment were also evaluated. The electrochemical tests performed consisted of open circuit corrosion potential (OCP) monitoring and cyclic potentiodynamic polarization measurements, determined after hours of immersion at 37°C body temperature. The scanning vibrating electrode electrochemical technique (SVET) was used as a tool to determine the corrosion current density in 0.1M NaCl solution. Results and discussion: The results obtained revealed the highest anodic current densities in the regions engraved by the laser beam and cathodic current densities in the regions farthest from the engravings, which indicates that laser engraving, in addition to increasing the roughness of the surfaces, makes them essentially anodic, changes the passive layer, affects the distribution of corrosion current densities and decreases the resistance to localized corrosion of this biomaterial. Conclusions: The change in the laser pulse frequency values is directly related to the behaviour observed on the analysed surfaces, indicating that the laser texturing treatment affects the passive layer of the material decreasing the resistance to localized corrosion.
dc.event.siglaCOLAOB
dc.format.extent80-80
dc.identifier.citationPIERETTI, EURICO F.; NEVES, MAURICIO D.M.; CORREA, OLANDIR V.; ANTUNES, RENATO A.; OLIVEIRA, MARA C.L.; PILLIS, MARINA F. Surface investigation of a laser etched metallic biomaterial. In: LATIN-AMERICAN CONGRESS OF ARTIFICIAL ORGANS AND BIOMATERIALS, 12th, December 12-15, 2023, Mar del Plata, Argentina. <b>Abstract...</b> p. 80-80. Disponível em: https://repositorio.ipen.br/handle/123456789/47949.
dc.identifier.orcidhttps://orcid.org/0000-0002-1304-2117
dc.identifier.orcidhttps://orcid.org/0000-0002-1423-871X
dc.identifier.urihttps://repositorio.ipen.br/handle/123456789/47949
dc.local.eventoMar del Plata, Argentina
dc.rightsopenAccess
dc.titleSurface investigation of a laser etched metallic biomaterial
dc.typeResumo de eventos científicos
dspace.entity.typePublication
ipen.autorEURICO FELIX PIERETTI
ipen.autorMAURICIO DAVID MARTINS DAS NEVES
ipen.autorOLANDIR VERCINO CORREA
ipen.autorMARINA FUSER PILLIS
ipen.codigoautor9762
ipen.codigoautor19
ipen.codigoautor488
ipen.codigoautor758
ipen.contributor.ipenauthorEURICO FELIX PIERETTI
ipen.contributor.ipenauthorMAURICIO DAVID MARTINS DAS NEVES
ipen.contributor.ipenauthorOLANDIR VERCINO CORREA
ipen.contributor.ipenauthorMARINA FUSER PILLIS
ipen.event.datapadronizada2023
ipen.identifier.ipendoc30290
ipen.notas.internasAbstract
ipen.type.genreResumo
relation.isAuthorOfPublication81bdc39e-9843-47fe-bbed-2ab1670d694a
relation.isAuthorOfPublication99e4f42a-cdfa-4da0-a1fc-4788ca55471c
relation.isAuthorOfPublication0d223026-81b0-4a0f-8968-882fd30c88d8
relation.isAuthorOfPublication90a23f45-0a62-4233-b676-a06bd75d6cc3
relation.isAuthorOfPublication.latestForDiscovery81bdc39e-9843-47fe-bbed-2ab1670d694a
sigepi.autor.atividadePIERETTI, EURICO F.:9762:730:S
sigepi.autor.atividadeNEVES, M.D.M.:19:730:N
sigepi.autor.atividadeCORREA, O.V.:488:730:N
sigepi.autor.atividadePILLIS, M.F.:758:730:N
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