Ceramic-metal composites (Cermets), which are a well-known category of advance materials, attract so much interest during decades due to their excellent abrasion and corrosion resistance. Powder metallurgy is a favorite route for fabrication of such materials; however this method is accompanied with the non-uniform distribution of reinforcements in the matrix, high sintering temperature and advanced equipment required. In order to reduce such limitations, in the present study Al2O3-Co-TiO2 nanocermets were fabricated by using metal coated Al2O3 powders. In this regard electroless cobalt deposition technique was used for metal coating of micronized Al2O3 particles. Subsequently, different compositions of coated particles were used to fabricate variety of nano-cermets. Also In this investigation, spark plasma sintering (SPS) has been used for obtaining fully dense samples. The morphology and chemical composition of the Co-coated powders were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The effects of TiO2 nano particle percentages were investigated on hardness of fabricated nano-cermets. Besides, the obtained results indicated that mechanical properties of composite samples fabricated by optimized percentage of nanoparticles showed some improvement and also uniform shells were coated on Al2O3 particle.

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