Next Article in Journal
Microstructure and Mechanical Properties of Resistance Heat-Assisted High-Power Ultrasonic Dissimilar Welded Cu/Al Joint
Previous Article in Journal
Analysis of Melt-Pool Behaviors during Selective Laser Melting of AISI 304 Stainless-Steel Composites
Previous Article in Special Issue
Controlling Nitrogen Dose Amount in Atmospheric-Pressure Plasma Jet Nitriding
Article Menu

Article Versions

Export Article

Open AccessArticle

Comparison of Mechanical and Antibacterial Properties of TiO2/Ag Ceramics and Ti6Al4V-TiO2/Ag Composite Materials Using Combined SLM-SPS Techniques

1
Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
2
Department of Chemistry and Biotechnology, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
3
Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia Tee 23, 12618 Tallinn, Estonia
*
Author to whom correspondence should be addressed.
Metals 2019, 9(8), 874; https://doi.org/10.3390/met9080874
Received: 16 July 2019 / Revised: 3 August 2019 / Accepted: 7 August 2019 / Published: 8 August 2019
(This article belongs to the Special Issue Plasmas Processes Applied on Metals and Alloys)
PDF [3232 KB, uploaded 8 August 2019]
  |  

Abstract

In present work, the combination of spark plasma sintering (SPS) and selective laser melting (SLM) techniques was introduced to produce composite materials where silver-doped titania (TiO2) ceramics were reinforced with ordered lattice structures of titanium alloy Ti6Al4V. The objective was to create bulk materials with an ordered hierarchical design that were expected to exhibit improved mechanical properties along with an antibacterial effect. The prepared composite materials were evaluated for structural integrity and mechanical properties as well as for antibacterial activity towards Escherichia coli. The developed titanium–silver/titania hybrids showed increased damage tolerance and ultimate strength when compared to ceramics without metal reinforcement. However, compared with titania/silver ceramics alone that exhibited significant antibacterial effect, titanium-reinforced ceramics showed significantly reduced antibacterial effect. Thus, to obtain antibacterial materials with increased strength, the composition of metal should either be modified, or covered with antibacterial ceramics. Our results indicated that the used method is a feasible route for adding ceramic reinforcement to 3D printed metal alloys.
Keywords: Ti6Al4V lattice structure; Ag-doped TiO2 anatase; spark plasma sintering; selective laser melting; additive manufacturing; antibacterial and photoactivity applications Ti6Al4V lattice structure; Ag-doped TiO2 anatase; spark plasma sintering; selective laser melting; additive manufacturing; antibacterial and photoactivity applications
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

Share & Cite This Article

MDPI and ACS Style

Rahmani, R.; Rosenberg, M.; Ivask, A.; Kollo, L. Comparison of Mechanical and Antibacterial Properties of TiO2/Ag Ceramics and Ti6Al4V-TiO2/Ag Composite Materials Using Combined SLM-SPS Techniques. Metals 2019, 9, 874.

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]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top