TiO and Zr powders were used as raw materials, and were milled by high energy ball milling method and horizontal ball milling method. Highly dense nanostructured 2Ti-ZrO2 composites were consolidated by pulsed current activated sintering method, within 4 minutes from high energy ball milled powder, and horizontal ball milled powders, under 1 GPa pressure. The relative densities of these specimens sintered from PCAS were measured by Archimedes' method. The grain sizes of ZrO2 in the composites were calculated by Suryanarayana and Grant Norton's formula. The average hardness and fracture toughness value of nanostuctured 2Ti-ZrO2 composite sintered from high energy ball milled powder were 1230 kg/mm(2) and 6.8MPa.m(1/2), respectively. The wear resistance of the composite was measured by pin-on-disc type apparatus, without a lubricant. Lastly, cell viability of the composite was analyzed by absorbance, using CCK-8 solution.

Keywords: Rapid sintering; Composite; Nanocrystalline; Characteristics; 2Ti-ZrO2