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Additive manufacturing of NiTi-Ti6Al4V multi-material cellular structures targeting orthopedic implants

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dc.contributor.authorBartolomeu, F.
dc.contributor.authorCosta, M.M.
dc.contributor.authorAlves, N.
dc.contributor.authorMiranda, G.
dc.contributor.authorSilva, F.S.
dc.date.accessioned2023-04-14T13:08:39Z
dc.date.available2023-04-14T13:08:39Z
dc.date.issued2020
dc.descriptionThis work was supported by FCT (Fundação para a Ciên- cia e a Tecnologia) through the grant SFRH/ BD/128657/2017 and the projects PTDC/EMS-TEC/5422/2014_ADAPTPROSTHESIS and UID/ EEA/04436/2019.pt_PT
dc.description.abstractThe amount of hip revision surgeries is significantly increasing due to the loss of fixation between implant and bone, that leads to implant failure. The stiffness mismatch between Ti6Al4V hip implants and bone tissue, the non-uniform implant-bone contact pressure, and the poor wear resistance of Ti6Al4V are pointed as three critical issues that contribute to these implant’s failure. In this study, a multi-material design and fabrication concept was exploited aiming to change traditional manufacturing paradigms, by allocating different biomaterials in a single component targeting a multi-functional hip implant. Selective Laser Melting technology was explored to fabricate NiTi-Ti6Al4V multi-material cellular structures with a Ti6Al4V inner region and a NiTi outer region. This work was focused on the SLM fabrication and processing parameters validation on a commercial SLM equipment. The morphological analyses allowed to assess a successful solidification and bond between NiTi and Ti6Al4V materials in the transition region. The shear tests revealed a high bond strength of the transition region with an average strength of 33 MPa. The nano-indentation results showed that the Ti6Al4V region exhibits a higher hardness and elastic modulus when compared with the NiTi region. This work is a part of a broader objective that aims to create a NiTi-Ti6Al4V multi-material and cellular structured hip implant capable to provide customized stiffness, superior wear resistance and a controlled NiTi outer region volume change.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationF. Bartolomeu, M.M. Costa, N. Alves, G. Miranda, F.S. Silva, Additive manufacturing of NiTi-Ti6Al4V multi-material cellular structures targeting orthopedic implants, Optics and Lasers in Engineering, Volume 134, 2020, 106208, ISSN 0143-8166, https://doi.org/10.1016/j.optlaseng.2020.106208.pt_PT
dc.identifier.doi10.1016/j.optlaseng.2020.106208pt_PT
dc.identifier.issn0143-8166
dc.identifier.urihttp://hdl.handle.net/10400.8/8384
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationSmart design of Titanium/NiTi cellular structured implants by Multi-Material-Selective-Laser-Melting
dc.relationMicroelectromechanical Systems Research Unit
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0143816620300993pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectNiTi-Ti6Al4Vpt_PT
dc.subjectMulti-materialpt_PT
dc.subjectSelective Laser Meltingpt_PT
dc.subjectShape-memory effectpt_PT
dc.subjectCellular structurespt_PT
dc.subjectImplantspt_PT
dc.titleAdditive manufacturing of NiTi-Ti6Al4V multi-material cellular structures targeting orthopedic implantspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSmart design of Titanium/NiTi cellular structured implants by Multi-Material-Selective-Laser-Melting
oaire.awardTitleMicroelectromechanical Systems Research Unit
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F128657%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEEA%2F04436%2F2019/PT
oaire.citation.titleOptics and Lasers in Engineeringpt_PT
oaire.citation.volume134pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameAlves
person.givenNameNuno
person.identifier452149
person.identifier.ciencia-id311E-1559-8F6C
person.identifier.orcid0000-0002-5016-0868
person.identifier.ridN-4073-2013
person.identifier.scopus-author-id7006403383
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoverybbd46a74-b77e-4539-a5fe-62ee95cdc4fa
relation.isProjectOfPublication33f88b93-b436-4312-ad64-0dc83204ee4a
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