2 research outputs found
Analysis of the Tribological Evolution of Nitride-Based Coatings
This chapter describes the fundamental and technological role of nitride-based hard coatings as protective coatings in some applications within the metalworking industry. For this, this chapter will present a critical review of previous research and recent developments on nitride-based coatings in different systems such as (multilayers, quaternaries, among others), where it will be possible to demonstrate their main properties and advantages that they can grant when they are implemented on conventional steels, such as greater hardness, surface control, electrochemical resistance, resistance against wear, among others. These results will determine that this type of coatings are suitable candidates to be implemented as protective coatings on cutting tools, which suffer from high wear in machining processes in the metalworking industry
Análisis del comportamiento a la fatiga de un acero inoxidable martensÃtico térmico de nitruración y recubrimiento por HVOF.
Actualmente en la industria de turbo-maquinaria se vienen utilizando estrategias para aumentar la resistencia a fatiga y para mitigar el desgaste erosivo por cavitación y por partÃcula dura de componentes mecánicos. En este proyecto se caracterizó el comportamiento a fatiga rotativa por flexión pura en agua de un acero usado en turbo maquinaria con dos tratamientos termoquÃmicos y un recubrimiento. Como sustrato se usó el acero inoxidable martensÃlico 13Cr -4 Ni equivalente al grado CA6NM de la norma ASTM A743. Se aplicaron tratamientos superficiales como: nitruración por plasma, nitrocarburación en baño de sales y recubrimientos de carburo de tungsteno (WC10Co4Cr) aplicado por rociado térmico