Japanese researchers explore the limits of ceramic plastic cutting

Japanese researchers used polycrystalline diamond tools to cut Al2O3 ceramics and Si3N4 ceramics. It was found that the coarse-grained polycrystalline diamond tools had less wear during the cutting process and the processing effect was good. When cutting ZrO2 ceramics with diamond tools, it reached The effect is similar to when cutting metal. They explored the limits of ceramic plastic cutting. The critical cutting depth of Al2O3 ceramics is apmax=2um, SiC ceramics apmax=1um, Si3N4 ceramics apmax=4um (ap>apmax, ceramic materials will produce brittle failure; when ap<apmax, plasticity Cutting)