in stainless steel
The most advantage of ion implantation in hard coating production is that ion implantation leaves the dimensions of the implanted tools completely unaltered. Therefore the hardening by implantation of small drills and other machine tools is successful, if the dimension of the cutting edge is so small, that surrounding PVD-layers would substantially decrease the sharpness. The following figure shows as an example the increase in wear protection by ion implantation dose for tungsten carbide drills.
Increase in wear protection by ion implantation for tungsten carbide tools.