Physico-Mechanical Properties of Metal Matrix Self-Lubricating Composites Reinforced with Traditional and Nanometric Particles

Innovative nanostructured materials offer the possibility of enhancing tribological performance traditional like graphite and molybdenum disulfide (MoS2). In this study, scratch resistance two different copper powders, dendritic spherical, their composites with MoS2, nanometric graphene nanoplatelets was investigated. Metal powder metallurgy employed to produce composite 5 wt% 10 each solid lubricant. A ball milling step grind mix matrix lubricants. The use a cold press combined sintering in inert atmosphere at 550 °C limited oxidation degradation so-produced were characterized through variety techniques such as micro-indentation hardness, electrical resistivity, contact angle wettability, X-ray diffraction, Raman scattering, scanning electron microscopy. Moreover, micro-scratch tests performed on both pure for comparing apparent hardness friction coefficients. scratches examined confocal laser microscopy (CLSM), identify evolution damage mechanisms during formation groove. results highlighted important difference between spherical powders demonstrated way improve wear behavior thanks