Surface chemistry of Ti6Al4V components fabricated using selective laser melting for biomedical applications

Vaithilingam, Jayasheelan and Prina, Elisabetta and Goodridge, Ruth D. and Hague, Richard J.M. and Edmondson, Steve and Rose, Felicity R.A.J. and Christie, Steven D.R. (2016) Surface chemistry of Ti6Al4V components fabricated using selective laser melting for biomedical applications. Materials Science and Engineering: C, 67 . pp. 294-303. ISSN 0928-4931

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Available under Licence Creative Commons Attribution.
Download (2MB) | Preview

Abstract

Selective laser melting (SLM) has previously been shown to be a viable method for fabricating biomedical implants; however, the surface chemistry of SLM fabricated parts is poorly understood. In this study, X-ray photoelectron spectroscopy (XPS) was used to determine the surface chemistries of (a) SLM as-fabricated (SLM-AF) Ti6Al4V and (b) SLM fabricated and mechanically polished (SLM-MP) Ti6Al4V samples and compared with (c) traditionally manufactured (forged) and mechanically polished Ti6Al4V samples. The SLM– AF surface was observed to be porous with an average surface roughness (Ra) of 17.6 ± 3.7 μm. The surface chemistry of the SLM-AF was significantly different to the FGD-MP surface with respect to elemental distribution and their existence on the outermost surface Sintered particles on the SLM-AF surface were observed to affect depth profiling of the sample due to a shadowing effect during argon ion sputtering. Surface heterogeneity was observed for all three surfaces; however, vanadium was witnessed only on the mechanically polished (SLM-MP and FGD-MP) surfaces. The direct and indirect 3T3 cell cytotoxicity studies revealed that the cells were viable on the SLM fabricated Ti6Al4V parts. The varied surface chemistry of the SLM-AF and SLM-MP did not influence the cell behaviour.

Item Type: Article
Keywords: Additive manufacturing; 3D printing; Selective laser melting (SLM); Surface chemistry; Ti6Al4V; Cytotoxicity
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering
University of Nottingham UK Campus > Faculty of Science > School of Pharmacy
Identification Number: https://doi.org/10.1016/j.msec.2016.05.054
Depositing User: Eprints, Support
Date Deposited: 20 May 2016 18:59
Last Modified: 16 Sep 2016 05:57
URI: http://eprints.nottingham.ac.uk/id/eprint/33425

Actions (Archive Staff Only)

Edit View Edit View