Next Article in Journal
Full-Scale Fatigue Testing of a Wind Turbine Blade in Flapwise Direction and Examining the Effect of Crack Propagation on the Blade Performance
Next Article in Special Issue
Three-Dimensional (3D) Printing of Polymer-Metal Hybrid Materials by Fused Deposition Modeling
Previous Article in Journal
Magnetic Force-Driven Graphene Patterns to Direct Synaptogenesis of Human Neuronal Cells
Previous Article in Special Issue
On the Anisotropic Mechanical Properties of Selective Laser-Melted Stainless Steel
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessFeature PaperArticle
Materials 2017, 10(10), 1154; doi:10.3390/ma10101154

Functionalization of Biomedical Ti6Al4V via In Situ Alloying by Cu during Laser Powder Bed Fusion Manufacturing

1
Department of Engineering and Physics, Karlstad University, 651 88 Karlstad, Sweden
2
Department of Mechanical and Mechatronic Engineering, Central University of Technology, Free State, Private Bag X20539, Bloemfontein 9300, South Africa
3
Centre for Applied Food Security and –Biotechnology (CAFSaB), Central University of Technology, Free State, Private Bag X20539, Bloemfontein 9300, South Africa
*
Author to whom correspondence should be addressed.
Received: 27 August 2017 / Revised: 30 September 2017 / Accepted: 1 October 2017 / Published: 3 October 2017
(This article belongs to the Special Issue Perspectives on Additively Manufactured Metallic Materials)
View Full-Text   |   Download PDF [11916 KB, uploaded 11 October 2017]   |  

Abstract

The modern medical industry successfully utilizes Laser Powder Bed Fusion (LPBF) to manufacture complex custom implants. Ti6Al4V is one of the most commonly used biocompatible alloys. In surgery practice, infection at the bone–implant interface is one of the key reasons for implant failure. Therefore, advanced implants with biocompatibility and antibacterial properties are required. Modification of Ti alloy with Cu, which in small concentrations is a proven non-toxic antibacterial agent, is an attractive way to manufacture implants with embedded antibacterial functionality. The possibility of achieving alloying in situ, during manufacturing, is a unique option of the LPBF technology. It provides unique opportunities to manufacture customized implant shapes and design new alloys. Nevertheless, optimal process parameters need to be established for the in situ alloyed materials to form dense parts with required mechanical properties. This research is dedicated to an investigation of Ti6Al4V (ELI)-1 at % Cu material, manufactured by LPBF from a mixture of Ti6Al4V (ELI) and pure Cu powders. The effect of process parameters on surface roughness, chemical composition and distribution of Cu was investigated. Chemical homogeneity was discussed in relation to differences in the viscosity and density of molten Cu and Ti6Al4V. Microstructure, mechanical properties, and fracture behavior of as-built 3D samples were analyzed and discussed. Pilot antibacterial functionalization testing of Ti6Al4V (ELI) in situ alloyed with 1 at % Cu showed promising results and notable reduction in the growth of pure cultures of Escherichia coli and Staphylococcus aureus. View Full-Text
Keywords: Ti6Al4V-Cu alloy; in situ alloying; microstructure and chemical homogeneity; antibacterial properties; implants Ti6Al4V-Cu alloy; in situ alloying; microstructure and chemical homogeneity; antibacterial properties; implants
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Krakhmalev, P.; Yadroitsev, I.; Yadroitsava, I.; de Smidt, O. Functionalization of Biomedical Ti6Al4V via In Situ Alloying by Cu during Laser Powder Bed Fusion Manufacturing. Materials 2017, 10, 1154.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top