Barium titanate powder and manufacturing thereof
AssigneeKorea Inst. of Ceramic Engineering & Technology
InventorsMoon Hee Choi, Hyeon Jin Jung, Seong Hyeok Choi
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Abstract
Provided are a barium titanate powder having spherical shape fine particles which have an average particle diameter (D50) in a range of about 140-270 nm, a tetragonal structure having a markedly improved tetragonality (c/a) in a range of 1.007-1.01 in contrast to the conventional composition, and at the same time, a markedly improved crystallinity in a range of 93-96%, thereby showing improved dielectric properties, and a manufacturing method thereof.
Claims13
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, and drying a mixture powder, 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 in a temperature range of 900-1000° C. to obtain a final barium titanate powder.
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 heat treating is performed in a temperature range of 900-1000° C.
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.
Dependencies are inferred from the claim text.