Patent ID: 11958755
Assignee: KOREA INST. OF CERAMIC ENGINEERING & TECHNOLOGY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 10:
11. A manufacturing method of a barium titanate powder, the method comprising:
mixing a barium carbonate (BaCO3) powder, a titanium dioxide (TiO2) powder, and a barium titanate (BaTiO3) ultra-fine powder, as raw material powders, an average particle diameter (D50) of the barium titanate ultra-fine powder being selected in a range of 20-120 nm; and
heat treating the mixture powder thus mixed to obtain a final barium titanate powder, wherein the final barium titanate powder obtained by the heat treating has an average particle diameter (D50) in a range of 140-270 nm and a tetragonal structure with a tetragonality (c/a) in a range of 1.007-1.01.