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Please use this identifier to cite or link to this item: https://dspace.ffh.bg.ac.rs/handle/123456789/960
Title: Laser-induced features at titanium implant surface in vacuum ambience
Authors: Ciganovic, Jovan
Zivkovic, Sanja
Momcilovic, Milos
Savovic, Jelena
Kuzmanović, Miroslav 
Stoiljkovic, Milovan
Trtica, Milan
Keywords: Laser induced surface modification;LIBS;Nanosecond TEA CO laser 2;Titanium implant surface
Issue Date: 1-Feb-2016
Journal: Optical and Quantum Electronics
Abstract: 
Interaction of a TEA CO2 laser with a titanium implant in vacuum (air pressure 0.1 mbar) was studied. The laser operates at 10.6 μm with pulse duration of 100 ns (FWHM). The surface alternations were studied at the moderate laser beam energy density/fluence of 52J/cm2. The energy absorbed from the TEA CO2 laser beam was partially converted to thermal energy, which generated a series of effects such as melting, vaporization of the molten material, shock waves, etc. The following titanium implant surface changes and phenomena were observed: (1) creation of superficial damage which takes crater-shaped form at a higher number of accumulated laser pulses. Maximal depth of the damage was 9 μm for 500 laser pulses. The damage cross-section had a conical form; (2) melt pools, inside the damage region, especially prominent for higher number of accumulated pulses; (3) preservation of chemical surface composition in central, and changes at the peripheral region, and (4) occurrence of plasma in front of the implant. The results have shown that under the applied experimental conditions, TEA CO2 laser can effectively be applied for enhancing the titanium implant roughness and creation of surface chemical changes. The appearance of plasma in front of the implant offers a sterilizing effect, facilitating contaminant-free conditions.
URI: https://dspace.ffh.bg.ac.rs/handle/123456789/960
ISSN: 0306-8919
DOI: 10.1007/s11082-015-0369-x
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University of Belgrade
Faculty of Physical Chemistry
Studentski trg 12-16
11158 Belgrade 118
PAC 105305
SERBIA
University of Belgrade Faculty of Physical Chemistry