Laser ablation and processing of polycrystalline cubic boron nitride cutting tool material

Impact of Green Ceramic Hybrid Machining (GCHM) on Reliability and Repeatability of the Properties of Sintered Yttrium-Tetragonal Zirconia Polycrystal Parts

“…Laser beam machining (LBM) is an alternative to shape ceramic materials while reducing micro-cracks generation thanks to the absence of force created by tool contact. Nevertheless, machining with a laser is dependent on fluence, making the ablation depth difficult to master [16]. It can influence the surface roughness [16], produce severe surface damage, as well as modifications in the microstructure or in the composition of the ceramic material [17].…”

“…Nevertheless, machining with a laser is dependent on fluence, making the ablation depth difficult to master [16]. It can influence the surface roughness [16], produce severe surface damage, as well as modifications in the microstructure or in the composition of the ceramic material [17]. It must be noted that LBM is also increasingly used to texture metallic components [18] and cutting tools [16].…”

“…It can influence the surface roughness [16], produce severe surface damage, as well as modifications in the microstructure or in the composition of the ceramic material [17]. It must be noted that LBM is also increasingly used to texture metallic components [18] and cutting tools [16]. The heat-affected zone (HAZ) generated by a nanosecond laser beam is characterised by micro-cracks, remelted material or recrystallisation [17].…”