Abstract
ZrO₂ is a promising candidate for knee and hip joint replacements due to its excellent combination of low density, corrosion resistance and biocompatibility. Nevertheless, a low fracture toughness of pure ZrO₂ at room temperature limits its wider application in the industry. One of the most obvious ways to solve the..... More

Abstract
Despite of many attractive properties of TiN, the current concern about the TiN focuses on its low fracture toughness below the ductile-brittle transition temperature. To improve its mechanical properties, the approach generally utilized has been the addition of a second phase to form composites and to make nanostructured materials. In..... More

Abstract
Despite of the many attractive properties of TiO₂, its low fracture toughness limits many industrial applications. To improve its fracture toughness, the approach commonly utilized has been the addition of a second phase, to form composites, and to make nanostructured composites. In this regard, highly dense nanostructured TiO₂ and TiO₂-graphene..... More

Abstract
CoTi and ZrO₂ nanopowders were mechanochemically synthesized from CoTiO₃ and Zr powders according to the reaction (2CoTiO₃ + 3Zr → 2CoTi + 3ZrO₂). The milled powders were then consolidated by pulsed current-activated sintering within two minutes under an applied pressure of 80MPa. The average hardness and fracture toughness of the..... More