期刊
TRIBOLOGY INTERNATIONAL
卷 131, 期 -, 页码 672-678出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2018.11.017
关键词
Ti6Al4V-PEEK; Selective laser melting; Multi-material design; Tribological characterization
资金
- FCT [SFRH/BD/128657/2017, SFRH/BPD/112111/2015, UID/EEA/04436/2013, NORTE 01-0145_FEDER-000018]
- FEDER funds through the COMPETE 2020 - Programa Operacional Competitividade e Internacionalizacao (POCI) [POCI-01-0145-FEDER-006941]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/128657/2017] Funding Source: FCT
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.
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