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Middle temperature sintered multilayer ceramic capacitor medium material and preparation method thereof
The invention discloses a middle temperature sintered multilayer ceramic capacitor medium material and a preparation method thereof. The middle temperature sintered multilayer ceramic capacitor medium material comprises BaTiO3 powder as a base material doped with 0.6-1.5% of (NiO)1-x(NbO2.5)x powder, wherein x is in a range of 0.6-0.8, 1.0-3.0% of CaZrO3 and 4-7% of a nanometer powder fluxing agent. The (NiO)1-x(NbO2.5)x compound is synthesized from NiO and Nb2O5 according to a mole ratio of 1-x:x/2, wherein x is in a range of 0.6-0.8. The CaZrO3 is synthesized from CaCO3 and ZrO2 according to a mole ratio of 1: 1. The nanometer powder fluxing agent comprises, by mass, 14% of Bi(NO3)3.5H2O, 14% of Pb(NO3)2, 30% of Zn(NO3)2.6H2O, 25% of tetrabutyl titanate (C16H36O4Ti) and 17% of tributyl borate (C12H27BO3). The preparation method effectively reduces a sintering temperature, realizes sintering at a middle temperature of 1150 DEG C and is suitable for business application. The middle temperature sintered multilayer ceramic capacitor medium material has excellent dielectric properties, a capacitance change rate within +/-12% in a temperature range of -55 to 150 DEG C and has high room temperature dielectric constant (less than or equal to 3000).
Middle temperature sintered multilayer ceramic capacitor medium material and preparation method thereof
The invention discloses a middle temperature sintered multilayer ceramic capacitor medium material and a preparation method thereof. The middle temperature sintered multilayer ceramic capacitor medium material comprises BaTiO3 powder as a base material doped with 0.6-1.5% of (NiO)1-x(NbO2.5)x powder, wherein x is in a range of 0.6-0.8, 1.0-3.0% of CaZrO3 and 4-7% of a nanometer powder fluxing agent. The (NiO)1-x(NbO2.5)x compound is synthesized from NiO and Nb2O5 according to a mole ratio of 1-x:x/2, wherein x is in a range of 0.6-0.8. The CaZrO3 is synthesized from CaCO3 and ZrO2 according to a mole ratio of 1: 1. The nanometer powder fluxing agent comprises, by mass, 14% of Bi(NO3)3.5H2O, 14% of Pb(NO3)2, 30% of Zn(NO3)2.6H2O, 25% of tetrabutyl titanate (C16H36O4Ti) and 17% of tributyl borate (C12H27BO3). The preparation method effectively reduces a sintering temperature, realizes sintering at a middle temperature of 1150 DEG C and is suitable for business application. The middle temperature sintered multilayer ceramic capacitor medium material has excellent dielectric properties, a capacitance change rate within +/-12% in a temperature range of -55 to 150 DEG C and has high room temperature dielectric constant (less than or equal to 3000).
Middle temperature sintered multilayer ceramic capacitor medium material and preparation method thereof
LI LINGXIA (author) / YU JINGYANG (author) / ZHANG BOWEN (author) / ZHANG NING (author) / YE JING (author)
2015-11-18
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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