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Method for preparation of high permittivity multilayer ceramic capacitor dielectric material by doping nano-powder
The invention discloses a method for preparation of high permittivity multilayer ceramic capacitor dielectric material by doping nano-powder. The method includes: taking BaTiO3 powder as the base material, on the basis, additionally adding 0.6-1.2% by mass of (NiO)1-x(NbO2.5)x, wherein x=0.6-0.8, and 3.0-4.0% of CaZrO3; wherein, (NiO)1-x(NbO2.5)x is synthesized from Ni(NO3)2.6H2O and Nb2O5 according to a mole ratio of 1-x:x/2 by a sol-gel technique, with x being 0.6-0.8, and CaZrO3 is synthesized from CaCO3 and ZrO2 in a mole ratio of 1:1; sintering the green body at 1250 DEG C, and performing heat preservation for 3h. In a temperature zone ranging from -55DEG C to 150DEG C, the dielectric material provided by the invention has a capacitance change rate within +/-15%, and has a high room temperature permittivity (about 4500).
Method for preparation of high permittivity multilayer ceramic capacitor dielectric material by doping nano-powder
The invention discloses a method for preparation of high permittivity multilayer ceramic capacitor dielectric material by doping nano-powder. The method includes: taking BaTiO3 powder as the base material, on the basis, additionally adding 0.6-1.2% by mass of (NiO)1-x(NbO2.5)x, wherein x=0.6-0.8, and 3.0-4.0% of CaZrO3; wherein, (NiO)1-x(NbO2.5)x is synthesized from Ni(NO3)2.6H2O and Nb2O5 according to a mole ratio of 1-x:x/2 by a sol-gel technique, with x being 0.6-0.8, and CaZrO3 is synthesized from CaCO3 and ZrO2 in a mole ratio of 1:1; sintering the green body at 1250 DEG C, and performing heat preservation for 3h. In a temperature zone ranging from -55DEG C to 150DEG C, the dielectric material provided by the invention has a capacitance change rate within +/-15%, and has a high room temperature permittivity (about 4500).
Method for preparation of high permittivity multilayer ceramic capacitor dielectric material by doping nano-powder
LI LINGXIA (Autor:in) / YU JINGYANG (Autor:in) / ZHANG BOWEN (Autor:in) / ZHANG NING (Autor:in) / YE JING (Autor:in)
18.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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