Micromachining of Co-Cr-Mo alloy Surface with Femtosecond laser

Abstract

Micromachining with the femtosecond laser as a new technology for modifying the surface of various dental materials is attracting great interest and is constantly evolving. In this work, the material of interest was the Co-Cr-Mo casting alloy used in dentistry. This is because its use weakens the properties of dental appliances. They should therefore be improved. To this end, in this study, the surface of a cast Co-Cr-Mo dental alloy was micromachined with different parameters of the femtosecond laser, i.e. with three laser powers and three scanning speeds. The morphology was analyzed with a scanning electron microscope. The hardness was measured using the Vickers method. The results showed that the optimum morphology was achieved during micromachining with a laser power of 0.7 W and a scanning speed of 0.005 m/s.