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Publication
Ti6Al4V cellular structures impregnated with biomedical PEEK: New material design for improved tribological behavior
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Advisor(s)
Abstract(s)
In the present work, a new material design of Ti6Al4V-PEEK hybrid cellular structure with improved wear
resistance is proposed. Samples with different dimensions of the open-cells (350, 400, 450, 500 μm) were
fabricated by Selective laser melting (SLM) technology, while Hot pressing (HP) technology was employed to
produce Ti6Al4V-PEEK hybrid cellular structures. The tribological tests were performed in Phosphate Buffered
Saline solution at 37 ± 2 C. Results demonstrated that the addition of the biomedical PEEK protected the Ti6Al4V cellular structures, thus improving these hybrid structures wear resistance when increasing the amount of PEEK. The obtained results indicated that the Ti6Al4V-PEEK hybrid cellular structure with the dimensions of the opencells of 500 μm is a suitable structure for orthopedic implants, with improved properties.
Description
This work was supported by FTC through the grant SFRH/BPD/112111/2015 and the project PTDC/EMS-TEC/5422/2014. Additionally, this work was supported by the project NORTE 01–0145_FEDER-000018 and by FCT with the reference project UID/EEA/04436/2013, by FEDER funds through the COMPETE 2020 – Programa Operacional Competitividade e Internacionalizaç~ao (POCI) with the reference project POCI-01-0145-FEDER-006941.
Keywords
Ti6Al4V alloy PEEK Cellular structures Sliding wear
Pedagogical Context
Citation
M. Buciumeanu, S. Almeida, F. Bartolomeu, M.M. Costa, N. Alves, F.S. Silva, G. Miranda, Ti6Al4V cellular structures impregnated with biomedical PEEK - New material design for improved tribological behavior, Tribology International, Volume 119, 2018, Pages 157-164, ISSN 0301-679X, https://doi.org/10.1016/j.triboint.2017.10.038
Publisher
Elsevier