Corrosion behaviour of PEEK or β-TCP-impregnated Ti6Al4V SLM structures targeting biomedical applications
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Data
2019-12-01
Autores
COSTA, M. M.
DANTAS, T. A.
BARTOLOMEU, F.
ALVES, N.
SILVA, F. S.
MIRANDA, G.
TOPTAN, F. [UNESP]
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Resumo
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.
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beta-tricalcium phosphate (β-TCP), corrosion, multimaterial design, poly-ether-ether-ketone (PEEK), Ti6Al4V cellular structures
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Transactions of Nonferrous Metals Society of China (English Edition), v. 29, n. 12, p. 2523-2533, 2019.