Mechanical piece with improved deformability

摘要

The invention relates to a mechanical piece having a structure comprising a substrate and at least one surface coating layer of nanometric thickness, for improving mechanical resistance, characterized in that it comprises between the substrate and the surface coating layer an essentially non ceramic, non porous adhesion layer of nanometric size; and said surface coating layer is an essentially non porous barrier layer consisting essentially of an essentially stoechiometric titanium nitride layer.