以100nm的BaTiO3粉末为原料，采用0.1mol/L的乙酸在10

Using 100nm BaTiO3 powder as raw material, 0.1mol/L acetic acid was used for hydrothermal activation treatment at 100℃/1h, and Ba(OH)2·8H2O was used as flux to cool at 350MPa, 400℃/1h. After sintering and annealing at 600℃/0.5h, BaTiO3 ceramics with a relative density of 96.62% and a grain size of 180nm were obtained. The room temperature dielectric (εr) was 2836, and the dielectric loss (tanθ) was as low as 0.03.

BaTiO3 ceramics with relative density of 96.62% and grain size of 180 nm were obtained by hydrothermal activation treatment with 100 nm BaTiO3 powder as raw material, 0.1mol/l acetic acid at 100 ℃ / 1H, cold sintering with BA (OH) 2 · 8H2O as flux at 350Mpa and 400 ℃ / 1H, and finally annealing at 600 ℃ / 0.5h（ ε r) 2836, dielectric loss (tan) θ) As low as 0.03.

With 100nm BaTiO3 powder as raw material, 0.1mol/L acetic acid was used for hydrothermal activation at 100℃/1h, Ba (OH) 2.8H2O was used as flux for cold sintering at 350MPa and 400℃/1h, and finally BaTiO3 with relative density of 96.62% and grain size of 180nm was obtained by annealing at 600℃/0.5h.