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Publication
Tribological behavior of Ti6Al4V cellular structures produced by Selective Laser Melting
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Advisor(s)
Abstract(s)
Additive manufacturing (AM) technologies enable the fabrication of innovative structures with complex geometries not easily manufactured by traditional processes. Regarding metallic cellular structures with tailored/customized mechanical and wear performance aiming to biomedical applications, Selective Laser Melting (SLM) is a remarkable solution for their production. Focusing on prosthesis and implants, in addition to a suitable Young's modulus it is important to assess the friction response and wear resistance of these cellular structures in a natural environment. In this sense, five cellular Ti6Al4V structures with different open-cell sizes (100–500 μm) were designed and produced by SLM. These structures were tribologicaly tested against alumina using a reciprocating sliding ball-on-plate tribometer. Samples were submerged in Phosphate Buffered Saline (PBS) fluid at 37 °C, in order to mimic in some extent the human body environment. The results showed that friction and wear performance of Ti6Al4V cellular structures is influenced by the structure open-cell size. The higher wear resistance was obtained for structures with 100 μm designed open-cell size due to the higher apparent area of contact to support tribological loading.
Description
Keywords
Selective Laser Melting (SLM) Ti6Al4V Cellular structures Wear Friction
Citation
F. Bartolomeu, M. Sampaio, O. Carvalho, E. Pinto, N. Alves, J.R. Gomes, F.S. Silva, G. Miranda, Tribological behavior of Ti6Al4V cellular structures produced by Selective Laser Melting, Journal of the Mechanical Behavior of Biomedical Materials, Volume 69, 2017, Pages 128-134, ISSN 1751-6161, https://doi.org/10.1016/j.jmbbm.2017.01.004
Publisher
Elsevier BV
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CC License
Without CC licence