y WC'Co'Cr depositados por proyección térmica, HVOF (High velocity oxy-fuel). La microestructura y adherencia de los recubrimientos se ha analizado por microscopía óptica y electrónica (SEM). Las características mecánicas de los recubrimientos se han determinado mediante ensayos de ultra-microdureza y el análisis tribológico (coeficiente de fricción y resistencia al desgaste) se ha realizado empleando un tribómetro Pin on disc (con y sin lubricación). Palabras clave Proyección térmica HVOE CrC-NiCr. WC-Co-Cr. Tribología. HVOF thermal spraying on aluminium alloys to improve wear behaviour Abstract This project is concerned with the investigation of the capability of HVOF thermal spraying to improve wear properties of aluminium alloys. CCr-NiCr and WC-Co-Cr were tested as coating materials. The adherence and coating microstructure were characterised by optical and SEM microscopy. The ultra-microindentation technique was applied to measure the mechanical properties of the coating. Experiments using a tribometer (pin on disc configuration) under lubricated and dry conditions have been performed in order to evaluate the friction and wear properties of the different coatings.
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