Abstract:Resumen-Las energía elasto-plásticas y el parámetro RID (Relative Indentation Depth: cociente entre la máxima profundidad de indentación y el espesor del recubrimiento, = hmax/t) se utilizaron para evaluar la capacidad de soportar carga de materiales con recubrimientos cerámicos. El estudio se realizó en sistemas sustrato-recubrimiento de TiN con espesores de 2 m y 3 m depositados por PAPVD sobre acero M2 y sobre acero inoxidable 304L. Se analizaron gráficos de dureza vs. y Wp/Wt vs. . Se encontraron cor… Show more
In this study, nanocrystalline Ni, Ni-TiN, and Ni90Cu10-TiN coatings were processed using reactive magnetron cosputtering of Ni, Cu, and Ti targets under Ar and N2 gas environment. The phase evolution and structure of coatings were analyzed by the X-ray diffraction (XRD) technique. The morphology of the as-prepared nanocomposite films were investigated by high-resolution transmission electron microscopy (HRTEM). The elastic modulus, nanohardness, and scratch resistance of the investigated films were measured using the nanoindentation technique and compared. The results showed that Ni, Ni-TiN and Ni90Cu10-TiN coatings exhibited nanocrystalline structure. The Ni90Cu10-TiN nanocomposite films showed optimum nanohardness and tribological properties due to the additional TiN additives which enhanced the dispersion hardening of the composite matrix significantly.
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