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.com
Volume 7, Issue 4 (Suppl)
J Biotechnol Biomater, an open access journal
ISSN: 2155-952X
Bio America 2017
October 19-20, 2017
October 19-20, 2017 | New York, USA
18
th
Biotechnology Congress
Characterization of the advanced Ti-Ag coatings deposited by Thermionic Vacuum Arc method for
biomedical applications
Aurelia Mandes, Rodica Vladoiu, Virginia Dinca-Balan
and
Gabriel Prodan
Ovidius University, Romania
T
he aim of this paper is to report on the results of the morphology, structure and wettability of the Ti-Ag films deposited by
using the Thermionic Vacuum Arc (TVA) method. The morphology and the structure of the thin films surface were examined
using a TEM (Phillips CM 120 ST, acceleration voltage of 120 kV, resolution point of 1.4 Å and a magnification of 1.2 M) and
Scanning Electron Microscopy (SEM, Zeiss EVO 50 SEM). Wettability of the surface was calculated by the contact angle method. The
measurement was performed by establishing the tangent angle of a sessile liquid drop on a solid surface, defined by the mechanical
equilibrium of the drop under the action of three interfacial tension solid-vapour, solid-liquid and liquid – vapour, by meaning of
the performed analysis software See System. All of these results were developed taking into account the Ti-Ag are difficult to be
processed. However, Ti-Ag coatings are used in various medical applications due to bio- and chemically inert, being presented as
prospective biomaterials in artificial hips, pins for setting bones and for other biological implants. Thermionic Vacuum Arc can be
ignited in vacuum between a heated cathode surrounded by an electron focusing Wehnelt cylinder and an anode containing the
material to be deposited (Ti-Ag). The TVA method is an original discharge type in pure vapour plasma, which can become one of the
most suitable technology to significantly improve the quality of the surfaces covered with different materials. Two types of substrates
were used in this work: silicon wafer and glass. Before the deposition, the substrates were chemically cleaned in ultrasonic bath with
a highly effective special cleaner. The uniformity, low roughness and smoothness suggest that Ti-Ag thin films deposited by TVA
technology could be considered as valuable advanced coatings titanium-based materials for biomedical applications
Biography
Aurelia Mandes has completed her PhD from PhD School at Physics Faculty from Bucharest University Romania. She is a Post-Doctoral Researcher at Ovidius University,
Faculty of Applied Sciences and Engineering, Constanţa, Romania. She has published more than 24 papers in reputed international journals (
J Appl Phys, Contrib Plasma
Phys, - Eur. Phys. J. D
) and three Chapters in books at Wiley – VCH Publisher 2010, NOVA Publisher 2012 and IN TECH Publisher 2016. She has expertise in deposition
and characterization of nanostructured thin films obtained by the Thermionic Vacuum Arc (TVA) technology
amandes@univ-ovidius.roAurelia Mandes et al., J Biotechnol Biomater 2017, 7:4 (Suppl)
DOI: 10.4172/2155-952X-C1-080