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Method for preparing nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder with co-precipitation method
The invention relates to a method for preparing nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder with a co-precipitation method. According to the invention, Ti(C4H9O)4 and Ba(NO3)2 are adopted as raw materials, and a BaTiO3 precursor precipitate is synthesized; Fe(NO3)3.9H2O, NbCl5 and Ba(NO3)2 are adopted as raw materials, and a Ba(Fe0.5Nb0.5)O3 precursor precipitate is synthesized; the two precursor precipitates are uniformly mixed according to a certain ratio; and the mixture is calcined under a temperature of 950-1050 DEG C, such that the nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder is obtained. According to the invention, the Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder is prepared with the co-precipitation method for a first time; and the prepared powder has uniform particles with small particle sizes, wherein the particle size distribution range is concentrated at approximately 30-50nm. According to the invention, Ba(Fe0.5Nb0.5)O3 is added into BaTiO3, such that BaTiO3 ceramic temperature stability can be improved, and dielectric properties can be improved. With the method, powder particle size is reduced; small-grain ceramic with low loss and excellent dielectric properties can be obtained; and the calcining temperature is greatly reduced by approximately 150-250 DEG C, such that energy saving can be facilitated.
Method for preparing nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder with co-precipitation method
The invention relates to a method for preparing nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder with a co-precipitation method. According to the invention, Ti(C4H9O)4 and Ba(NO3)2 are adopted as raw materials, and a BaTiO3 precursor precipitate is synthesized; Fe(NO3)3.9H2O, NbCl5 and Ba(NO3)2 are adopted as raw materials, and a Ba(Fe0.5Nb0.5)O3 precursor precipitate is synthesized; the two precursor precipitates are uniformly mixed according to a certain ratio; and the mixture is calcined under a temperature of 950-1050 DEG C, such that the nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder is obtained. According to the invention, the Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder is prepared with the co-precipitation method for a first time; and the prepared powder has uniform particles with small particle sizes, wherein the particle size distribution range is concentrated at approximately 30-50nm. According to the invention, Ba(Fe0.5Nb0.5)O3 is added into BaTiO3, such that BaTiO3 ceramic temperature stability can be improved, and dielectric properties can be improved. With the method, powder particle size is reduced; small-grain ceramic with low loss and excellent dielectric properties can be obtained; and the calcining temperature is greatly reduced by approximately 150-250 DEG C, such that energy saving can be facilitated.
Method for preparing nano-grade Ba[(Fe0.5Nb0.5)xTi1-x]O3 powder with co-precipitation method
WANG ZHUO (Autor:in) / FANG MINGRUI (Autor:in) / WEN YONGFEI (Autor:in) / LI HAIJUAN (Autor:in) / WANG CHUN (Autor:in) / SUN CHENGWEI (Autor:in)
08.04.2015
Patent
Elektronische Ressource
Englisch
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