Fabrication of CrN/Cr2N bulk composites and their mechanical properties

Bulk CrN/Cr 2 N billet with almost full density was successfully fabricated using spark-plasma sintering. Elastic moduli, hardness, and fracture toughness were evaluated to investigate the effect of sintering conditions on the mechanical properties. Ball-on-disk testing was performed to understand the wear and friction behavior of this bulk CrN/Cr 2 N composite solid. The wear map was constructed as a function of the sliding velocity and the applied pressure, to categorize the wear mechanism of this nitride composite.