Author(s):
1. Bojana Radojković, Institut Goša, Milana Rakića 35, Beograd, Serbia
2. Slavica Ristić, Institut Goša, Milana Rakića 35, Beograd, Serbia
3. Suzana Polić, Centralni institut za konzervaciju, Terazije 26, Beograd, Serbia
4. Milorad Davidović, Institut Goša, Milana Rakića 35, Beograd, Serbia

Abstract:
This paper presents the results of the micromorphological and chemical changes on the surface of a glazed ceramic sample irradiated by the CO2 laser. The tested sample is a part of a tile. The laser irradiation effects were studied as a function of the number of laser pulses and laser fluences around and over the damage threshold. The obtained modifications were investigated because these are essential in laser processing of the ceramics. The CO2 laser with =10.6 μm and full width at half the maximum pulse τ=100 ps has been used for the surface treatment. The ceramic surface morphology modifications, induced by laser, were characterized by a scanning electron microscope (SEM), while the composition was examined by energy-dispersive (EDX) and X-ray fluorescence (XRF) spectroscopy. The results show that there are significant differences depending on the applied laser fluences and number of pulses.

Key words:
ceramics, CO2 laser, laser processing, SEM, EDX, XRF

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
15.07.2015.

Conference:
Contemporary Materials 2015 - Savremeni Materijali

Abstract