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US 9,805,847 B2Granted
Thermistor material and method of preparing the same
AssigneeBYD Company Limited
InventorsYanshuai Zhao, Wei Zhou
Life of this patent
Estimating the term…
Abstract
A thermistor material and a method for preparing a thermistor material are provided. The thermistor material is prepared by mixing and heating a mixture containing BaTiO3, B2O3, SiO2, Li2O, P2O5, Cs2O, Nd2O3, Al2O3 and TiO2.
Claims19
A method for preparing a thermistor material, comprising steps of:
- providing a first mixture comprising BaTiO3, B2O3, SiO2, Li2O, P2O5, Cs2O and Nd2O3, wherein with respect to 100 weight parts of the first mixture, BaTiO3 is about 94.85 weight parts to about 97.75 weight parts, B2O3 is about 0.4 weight parts to about 2.5 weight parts, SiO2 is about 0.5 weight parts to about 0.9 weight parts, Li2O is about 0.08 weight parts to about 0.2 weight parts, P2O5 is about 0.2 weight parts to about 0.3 weight parts, Cs2O is about 0.6 weight parts to about 0.725 weight parts, and Nd2O3 is about 0.325 weight parts to about 0.565 weight parts;
- sintering the first mixture at about 800 degree Celsius to about 900 degree Celsius to form a first powder material;
- mixing the first powder material with a second mixture comprising Al2O3 and TiO2, wherein with respect to 100 weight parts of BaTiO3, Al2O3 is about 0.06 weight parts to about 0.08 weight parts, and TiO2 is about 0.07 weight parts to about 0.08 weight parts to form a second power material;
- granulating, pelleting and molding the second powder material to form a molded material;
- and
- subjecting the molded material to a heat treatment.
3 more elements
A thermistor material prepared by mixing and heating a mixture, wherein the mixture comprises BaTiO3, B2O3, SiO2, Li2O, P2O5, Cs2O, Nd2O3, Al2O3 and TiO2,
- wherein with respect to 100 weight parts of BaTiO3, B2O3 is about 1.05 weight parts to about 2.64 weight parts, SiO2 is about 0.52 weight parts to about 0.94 weight parts, Li2O is about 0.084 weight parts to about 0.21 weight parts, P2O5 is about 0.21 weight parts to about 0.32 weight parts, Cs2O is about 0.63 weight parts to about 0.764 weight parts, Nd2O3 is about 0.343 weight parts to about 0.596 weight parts, Al2O3 is about 0.06 weight parts to about 0.08 weight parts, and TiO2 is about 0.04 weight parts to about 0.08 weight parts.
Dependencies are inferred from the claim text.