Tribological behavior of Ti6Al4V cellular structures produced by Selective Laser Melting

被引：59

作者：

Bartolomeu, F. ^{[1
]}

Sampaio, M. ^{[1
]}

Carvalho, O. ^{[1
]}

Pinto, E. ^{[2
]}

Alves, N. ^{[2
]}

Gomes, J. R. ^{[1
]}

Silva, F. S. ^{[1
]}

Miranda, G. ^{[1
]}

机构：

[1] Univ Minho, Ctr Microelectro Mech 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

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2017年 / 69卷

关键词：

Selective Laser Melting (SLM); Ti6Al4V; Cellular structures; Wear; Friction; MECHANICAL-PROPERTIES; PREDICTIVE MODELS; BONE; FABRICATION;

D O I：

10.1016/j.jmbbm.2017.01.004

中图分类号：

R318 [生物医学工程];

学科分类号：

100103 [病原生物学];

摘要：

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 pm) 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 degrees 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 pm designed open-cell size due to the higher apparent area of contact to support tribological loading.

引用

页码：128 / 134

页数：7

共 23 条

[1]

Osteoblast adhesion on biomaterials [J].