Ti6Al4V-PEEK multi-material structures – design, fabrication and tribological characterization focused on orthopedic implants

Bartolomeu, F.; Abreu, C.S.; Moura, C.G.; Costa, M.M.; Alves, N.; Silva, F.S.; Miranda, G.

http://hdl.handle.net/10400.8/8593

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Abstract(s)

A multi-material concept that gathers Ti6Al4V and PEEK properties in a cellular structured component was designed, fabricated and investigated targeting hip implants. SLM and pressure assisted injection techniques were used to obtain Ti6Al4V-PEEK multi-material structures. Aiming to reproduce to some extension the tribological phenomena occurring during and after hip implant insertion, five tribological tests were outlined and performed. The obtained results showed that the presence of PEEK on the Ti6Al4V-PEEK cellular structures led to a substantial improvement on the wear resistance (62% reduction in the mass loss) when compared to the material currently available on market for hip implants. The multi-material solution here investigated shows a good compromise between the primary stability after implant insertion and the wear performance.

Description

Acknowledgements: This work was supported by FCT through the grants SFRH/BD/128657/2017 and SFRH/BPD/112111/2015, the project PTDC/EMSTEC/5422/2014 and also by project NORTE 01-0145_FEDER-000018. Additionally, this work was supported by FCT with the reference project UID/EEA/04436/2013, by FEDER funds through the COMPETE 2020 – Programa Operacional Competitividade e Internacionalização (POCI) with the reference project POCI-01-0145-FEDER-006941.

Keywords

Ti6Al4V-PEEK Selective laser melting Multi-material design Tribological characterization

URI

http://hdl.handle.net/10400.8/8593

Citation

F. Bartolomeu, C.S. Abreu, C.G. Moura, M.M. Costa, N. Alves, F.S. Silva, G. Miranda, Ti6Al4V-PEEK multi-material structures – design, fabrication and tribological characterization focused on orthopedic implants, Tribology International, Volume 131, 2019, Pages 672-678, F. Bartolomeu, C.S. Abreu, C.G. Moura, M.M. Costa, N. Alves, F.S. Silva, G. Miranda, Ti6Al4V-PEEK multi-material structures – design, fabrication and tribological characterization focused on orthopedic implants, Tribology International, Volume 131, 2019, Pages 672-678, ISSN 0301-679X, https://doi.org/10.1016/j.triboint.2018.11.017 https://doi.org/10.1016/j.triboint.2018.11.017.