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Intermediate-temperature sintering unleaded multilayer ceramic capacitor dielectric material and preparing method thereof
The invention discloses an intermediate-temperature sintering unleaded multilayer ceramic capacitor dielectric material. The material is prepared from BaTiO[3] powder which serves as the base material, Na[0.5]Bi[0.5]TiO[3] with a mass percent of 0.8-1.3%, 0.6-1.5% (NiO)[1-X](NbO[2.5])[x] nano-powder, 1.0-3.0% CaZrO[3] and 4-7% nano-powder fluxing agent, wherein x=0.6-0.8. Na[0.5]Bi[0.5]TiO[3] is formed by Na[2]CO[3], Bi[2]O[3] and TiO[2] through synthesis according to a molar ratio of 1:1:4. The (NiO)[1-X](NbO[2.5])[x] compound is formed by NiO and Nb[2]O[5] through synthesis according to a molar ratio of 1-x:x/2, wherein x=0.6-0.8. CaZrO[3] is formed by CaCO[3] and ZrO[2] through synthesis according to a molar ratio of 1:1. The nano-powder fluxing agent is prepared from, by mass, 20% of Bi(NO[3])[3].5H[2]O, 30% of Zn(NO[3])[2].6H[2]O, 30% of C[16]H[36]O[4]Ti and 20% of C[12]H[27]BO[3]. According to the material, intermediate-temperature sintering is achieved at the temperature under 1150 DEG C, and lead doping is avoided; capacitance change rate is within +/-12% at the temperature between -55 DEG C and 150 DEG C; indoor temperature dielectric constant is quite high and is about 2700.
Intermediate-temperature sintering unleaded multilayer ceramic capacitor dielectric material and preparing method thereof
The invention discloses an intermediate-temperature sintering unleaded multilayer ceramic capacitor dielectric material. The material is prepared from BaTiO[3] powder which serves as the base material, Na[0.5]Bi[0.5]TiO[3] with a mass percent of 0.8-1.3%, 0.6-1.5% (NiO)[1-X](NbO[2.5])[x] nano-powder, 1.0-3.0% CaZrO[3] and 4-7% nano-powder fluxing agent, wherein x=0.6-0.8. Na[0.5]Bi[0.5]TiO[3] is formed by Na[2]CO[3], Bi[2]O[3] and TiO[2] through synthesis according to a molar ratio of 1:1:4. The (NiO)[1-X](NbO[2.5])[x] compound is formed by NiO and Nb[2]O[5] through synthesis according to a molar ratio of 1-x:x/2, wherein x=0.6-0.8. CaZrO[3] is formed by CaCO[3] and ZrO[2] through synthesis according to a molar ratio of 1:1. The nano-powder fluxing agent is prepared from, by mass, 20% of Bi(NO[3])[3].5H[2]O, 30% of Zn(NO[3])[2].6H[2]O, 30% of C[16]H[36]O[4]Ti and 20% of C[12]H[27]BO[3]. According to the material, intermediate-temperature sintering is achieved at the temperature under 1150 DEG C, and lead doping is avoided; capacitance change rate is within +/-12% at the temperature between -55 DEG C and 150 DEG C; indoor temperature dielectric constant is quite high and is about 2700.
Intermediate-temperature sintering unleaded multilayer ceramic capacitor dielectric material and preparing method thereof
LI LINGXIA (author) / YU JINGYANG (author) / ZHANG BOWEN (author) / ZHANG NING (author) / SUN HAO (author)
2015-11-25
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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