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Ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material and preparation method thereof
The invention discloses an ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material and a preparation method thereof, and belongs to the technical field of electronic element and component materials. According to the expression (1-x) Bi0.5Na0.5TiO3-xNaNbO3, 0.25<=x<=0.35, Bi2O3, Na2CO3, TiO2 and Nb2O5 are weighed according to the stoichiometric ratio of metal atoms in the expression and serve as substrate raw materials. Prepared particles after pre-sintering are pulverized, mixed evenly after ball milling is performed for 12 hours and ground into powder after being dried, with a polyvinyl alcohol water solution being an adhesion agent, granulating is performed, then the powder is formed in a pressed mode after passing a sieve of 80 meshes, colloid is discharged and then sintered at 1100-1200 DEG C in high-temperature furnace air atmosphere, and then temperature increase rate is 3 DEG C/min; thermal insulation is performed for 2 hours, then the powder is naturally cooled to indoor temperature along with a furnace, and then the ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material is prepared. The operation method is simple, the preparation period is short, energy consumption and the cost are low, and small pollution is achieved.
Ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material and preparation method thereof
The invention discloses an ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material and a preparation method thereof, and belongs to the technical field of electronic element and component materials. According to the expression (1-x) Bi0.5Na0.5TiO3-xNaNbO3, 0.25<=x<=0.35, Bi2O3, Na2CO3, TiO2 and Nb2O5 are weighed according to the stoichiometric ratio of metal atoms in the expression and serve as substrate raw materials. Prepared particles after pre-sintering are pulverized, mixed evenly after ball milling is performed for 12 hours and ground into powder after being dried, with a polyvinyl alcohol water solution being an adhesion agent, granulating is performed, then the powder is formed in a pressed mode after passing a sieve of 80 meshes, colloid is discharged and then sintered at 1100-1200 DEG C in high-temperature furnace air atmosphere, and then temperature increase rate is 3 DEG C/min; thermal insulation is performed for 2 hours, then the powder is naturally cooled to indoor temperature along with a furnace, and then the ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material is prepared. The operation method is simple, the preparation period is short, energy consumption and the cost are low, and small pollution is achieved.
Ultra-wide-temperature high-stability lead-free capacitor ceramic dielectric material and preparation method thereof
HOU YUDONG (author) / ZHANG JIN (author) / CHAO LUMEN (author) / ZHENG MUPENG (author) / ZHU MANKANG (author) / YAN HUI (author)
2015-12-23
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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