“…Heat treatments (quenching and tempering) and thermochemical treatment can be used to improve the surface [2]. Nitriding is a thermochemical treatment consisting of the diffusion of nitrogen in metal alloys, in order to improve their surface mechanical properties, hardness, wear resistance, fatigue resistance and corrosion resistance [3,4]. In this study, the microstructure obtained in a steel AISI H13 nitrided at different times by salt bath after a heat treatment is analyzed.…”