Glycothermal synthesis of 3 mol% yttria stabilized tetragonal ZrO2 nano powders at low temperature without mineralizers

摘要: Abstract Tetragonal 3YSZ (3 mol% yttria-stabilized zirconia) nanoparticles were synthesized at temperature as low 200 °C through a glycothermal reaction using coprecipitated amorphous hydrous gel of ZrCl4 and YCl3·6H2O precursors 1,4-butanediol solvent. XRD TEM data support that processing method provides simple route for producing highly crystallized tetragonal ZrO2 without mineralizers, which could also be extended to other system. Raman analysis indicated in condition had phase any trace monoclinic phase. The as-prepared have spherical morphology with an average crystal size 7–10 nm agglomerated into shape diameter about 100–200 nm. remained stable heat treatment when the calcinations as-synthesized powder carried out from 400 1400 °C. combination uniform glycothemally-synthesized nano-powder two-step sintering can suppress grain boundary migration but not affect diffusion long annealing period. Fine-grained microstructure 100–500 nm was obtained abnormal growth although pellet fully dense 98.1% theoretical density pellets sintered 1350 1400 °C exhibit activation energies conduction range 0.84 eV, are close values usually found zirconia-based solid electrolytes.