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Publication
Corrosion behaviour of PEEK or β-TCP-impregnated Ti6Al4V SLM structures targeting biomedical applications
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Advisor(s)
Abstract(s)
Ti6Al4V cellular structures were produced by selective laser melting (SLM) and then filled either with beta-tricalcium phosphate (β-TCP) or PEEK (poly-ether-ether-ketone) through powder metallurgy techniques, to improve osteoconductivity and wear resistance. The corrosion behavior of these structures was explored considering its importance for the long-term performance of implants. Results revealed that the incorporation of open cellular pores induced higher electrochemical kinetics when being compared with dense structures. The impregnation of β-TCP and PEEK led to the creation of voids or gaps between the metallic matrix and the impregnated material which also influenced the corrosion behavior of the cellular structures.
Description
This work was supported by FCT through the grants PD/BD/140202/2018, SFRH/BD/140191/2018 and SFRH/BD/128657/2017, and the projects PTDC/EMSTEC/
5422/2014 and NORTE-01-0145-FEDER-000018-HAMaBICo. Additionally, this work was supported by FCT with the reference project UID/EEA/04436/2019. F. TOPTAN is grateful for the financial support through the M-ERA-NET/0001/2015 project (FCT).
Keywords
Ti6Al4V cellular structures Corrosion Multimaterial design Poly-ether-ether-ketone (PEEK) Beta-tricalcium phosphate (β-TCP)
Citation
M.M. Costa, T.A. Dantas, F. Bartolomeu, N. Alves, F.S. Silva, G. Miranda, F. Toptan, Corrosion behaviour of PEEK or β-TCP-impregnated Ti6Al4V SLM structures targeting biomedical applications, Transactions of Nonferrous Metals Society of China, Volume 29, Issue 12, 2019, 2523-2533, ISSN 1003-6326, https://doi.org/10.1016/S1003-6326(19)65160-5
Publisher
Elsevier - ScienceDirect