Multi-material NiTi-PEEK hybrid cellular structures by Selective Laser Melting and Hot Pressing: Tribological characterization

被引：18
作者：
Costa, M. M. [1 ]
Bartolomeu, F. [1 ]
Palmeiro, J. [1 ]
Guimaraes, B. [1 ]
Alves, N. [2 ]
Miranda, G. [1 ,3 ]
Silva, F. S. [1 ]
机构：
[1] Univ Minho, Ctr MicroElectroMech Syst CMEMS UMinho, Campus Azurem, P-4800058 Guimaraes, Portugal
[2] Polytech Inst Leiria, Ctr Rapid & Sustainable Prod Dev, Rua Gen Norton de Matos,Apartado 4133, P-2411901 Leiria, Portugal
[3] Univ Aveiro, Aveiro Inst Mat, CICECO, Dept Mat & Ceram Engn, P-3810193 Aveiro, Portugal
来源：
TRIBOLOGY INTERNATIONAL | 2021年 / 156卷 / 156期
关键词：
Multi-material structures; NiTi-PEEK; Selective laser melting; Hot pressing;
D O I：
10.1016/j.triboint.2020.106830
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, a multi-material NiTi-PEEK cellular structured solution was designed, produced and characterized targeting orthopedic applications. For that purpose, Selective Laser Melting (SLM) technique was used to produce NiTi cellular structures with different open-cell sizes and wall thicknesses. Hot Pressing (HP) technique was used to introduce PEEK in the open-cells of NiTi structures to obtain multi-material components. Morphological characterization showed that the selected SLM processing parameters were suited to achieve high-quality parts without significant defects. Tribological characterization proved an enhanced wear resistance to the multi-material specimens when compared with the mono-material NiTi structures. These multi-material structures are a promising solution for providing a customized stiffness and superior wear resistance to NiTi structures to be integrated in innovative orthopedic designs.
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页数：9
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