Eventos Anais de eventos
COBEF 2021
11th Brazilian Congress on Manufacturing Engineering
EFFECTS OF LASER PROCESS PARAMETERS ON Al2O3-TiC CERAMIC USING A NANOSECOND PULSED LASER
Submission Author:
Larissa Juliana Sirtuli , SC
Co-Authors:
Larissa Juliana Sirtuli, Vitória Luise Silva, Claudio Abilio da Silveira, Denis Boing, Rolf Schroeter
Presenter: Larissa Juliana Sirtuli
doi://10.26678/ABCM.COBEF2021.COB21-0114
Abstract
Laser surface texturing (LST) is a potential technique to improve the load capacity, friction properties, and wear resistance of ceramic components. However, to obtain product quality and process efficiency is essential to the optimization of laser process parameters. This paper reports a study on the effects of laser parameters on the laser surface texturing of structural ceramic Al2O3-TiC with a nanosecond pulsed laser. A factorial design of experiments was performed. The surface morphology and width of the ablated region generated with different pulse durations, laser powers, and pulse overlaps are analyzed by scanning electron microscope (SEM). Laser parameters were decisive in the ablated zone. The effect of pulse duration in ablated region width is higher than the effect of laser power and pulse overlap. The increase in pulse duration, laser power, and pulse overlap led to the formation of continuous grooves due to higher laser energy that causes higher material removal. Microcracks were formed even in the least intense energy condition. The results obtained are a contribution to a better selection of laser parameters for laser processing of Al2O3- TiC ceramics.
Keywords
Laser surface texturing, Laser micromachining, Nanosecond pulsed laser, Al2O3-TiC ceramic
DOWNLOAD PDF VIEW PRESENTATION
