Nanocrystalline bulk sintered mixed

Nanocrystalline bulk sintered mixed oxides of TiO2-Nb2O5 with similar grain size as the powder precursors were produced using mild conditions in both synthesis and sintering. Microwave-assisted synthesis was performed in hydrothermal treatment at 170 °C for 5 min to obtain nanoparticles in the range of 20 to 40 nm. Cold sintering was carried out applying 300 MPa at 200 °C during 30 min to reach the targeted phases with a relative density above 91% and grain size under 100 nm. The combination of both techniques enables a feasible technological route to manufacture nanoceramics at reduced processing energy and time.