Corrosion behaviour of PEEK or β-TCP-impregnated Ti6Al4V SLM structures targeting biomedical applications

• Autor(a) principal: COSTA, M. M.
• Data de Publicação: 2019
• Outros Autores: DANTAS, T. A., BARTOLOMEU, F., ALVES, N., SILVA, F. S., MIRANDA, G., TOPTAN, F. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/S1003-6326(19)65160-5; http://hdl.handle.net/11449/198319
• topic: beta-tricalcium phosphate (β-TCP); corrosion; multimaterial design; poly-ether-ether-ketone (PEEK); Ti6Al4V cellular structures

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.