The scanning cyclic press (SCP), developed by our team, can refine the surface microstructure by scanning a metal surface using a vibrating indenter. In this
study, we aimed to develop a new nitriding technique using SCP to form a titanium nitride at room temperature. SCP was applied to pure titanium in a nitrogen
environment, and observations and elemental and crystal structure analyses of the modified surface areas were conducted using an electron probe micro analyzer
and transmission electron microscope. Consequently, the surface of the modified area transformed into a golden color. We detected nitrogen at the surface of the
specimen and clarified that it formed a polycrystalline TiN layer with grain sizes ranging from several to a few dozen nanometers. The results suggest that the
mechanical vibration induced by SCP can create a nitride layer on the surface of pure titanium at room temperature.