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Method for balancing fluorinated barium strontium titanate
The invention relates to a method for balancing fluorinated barium strontium titanate. The method comprises the following steps: (1) hydroxylation of barium strontium titanate powder, namely adding the barium strontium titanate powder to hydrogen peroxide, controlling the temperature to100 DEG C, processing for 3-5 hours, cleaning with deionized water and ethyl alcohol, and then drying in a drying oven for 2 hours; and (2) fluorination of the barium strontium titanate powder, namely putting the barium strontium titanate powder with the hydroxylated surface into a fluorination chamber, heating the fluorination chamber to 30-100 DEG C, vacuumizing the fluorination chamber and carrying out nitrogen replacement, introducing a fluorine gas or a fluorine-nitrogen mixed gas into the fluorination chamber, controlling the pressure of the fluorination chamber to -0.08MPa to 0.1MPA, maintaining the original temperature and reacting for 20-300 minutes, so as to prepare the fluorinated barium strontium titanate powder. Compared with the prior art, the method is simple, feasible, low in cost, convenient, fast and the like; and fluorination can be carried out on ferroelectric ceramic powder such as barium strontium titanate.
Method for balancing fluorinated barium strontium titanate
The invention relates to a method for balancing fluorinated barium strontium titanate. The method comprises the following steps: (1) hydroxylation of barium strontium titanate powder, namely adding the barium strontium titanate powder to hydrogen peroxide, controlling the temperature to100 DEG C, processing for 3-5 hours, cleaning with deionized water and ethyl alcohol, and then drying in a drying oven for 2 hours; and (2) fluorination of the barium strontium titanate powder, namely putting the barium strontium titanate powder with the hydroxylated surface into a fluorination chamber, heating the fluorination chamber to 30-100 DEG C, vacuumizing the fluorination chamber and carrying out nitrogen replacement, introducing a fluorine gas or a fluorine-nitrogen mixed gas into the fluorination chamber, controlling the pressure of the fluorination chamber to -0.08MPa to 0.1MPA, maintaining the original temperature and reacting for 20-300 minutes, so as to prepare the fluorinated barium strontium titanate powder. Compared with the prior art, the method is simple, feasible, low in cost, convenient, fast and the like; and fluorination can be carried out on ferroelectric ceramic powder such as barium strontium titanate.
Method for balancing fluorinated barium strontium titanate
ZHAI JIWEI (author) / LIU SHAOHUI (author) / AN ZHENLIAN (author) / SHEN BO (author)
2015-04-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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