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Preparation method of sheet shaped potassium-sodium niobate powder
The invention relates to a preparation method of sheet shaped potassium-sodium niobate powder. The method comprises the following steps: Bi2O3, alkali carbonate and Nb2O5 are raw materials, NaCl is molten salt, and sheet shaped Bi2.5Na3.5Nb5O18 powder is prepared by a molten-salt growth method; then, the sheet shaped Bi2.5Na3.5Nb5O18 powder and alkali carbonate are raw materials, KCl is molten salt, and sheet shaped (K0.5Na0.5)NbO3 powder is prepared by the molten-salt growth method. Compared with the prior art, the preparation method has the advantages of simple process, low cost, high repeatability and good production efficiency; the prepared sheet shaped (K0.5Na0.5)NbO3 powder has a perovskite structure with uniform distribution and large dimension, and can be used as a template of a high draw ratio for preparation of a lead-free piezoelectric textured ceramic, in order to improve texturing degree of the ceramic and the piezoelectric performance; the powder has an important meaning for promoting research of the leadless piezoelectric ceramic.
Preparation method of sheet shaped potassium-sodium niobate powder
The invention relates to a preparation method of sheet shaped potassium-sodium niobate powder. The method comprises the following steps: Bi2O3, alkali carbonate and Nb2O5 are raw materials, NaCl is molten salt, and sheet shaped Bi2.5Na3.5Nb5O18 powder is prepared by a molten-salt growth method; then, the sheet shaped Bi2.5Na3.5Nb5O18 powder and alkali carbonate are raw materials, KCl is molten salt, and sheet shaped (K0.5Na0.5)NbO3 powder is prepared by the molten-salt growth method. Compared with the prior art, the preparation method has the advantages of simple process, low cost, high repeatability and good production efficiency; the prepared sheet shaped (K0.5Na0.5)NbO3 powder has a perovskite structure with uniform distribution and large dimension, and can be used as a template of a high draw ratio for preparation of a lead-free piezoelectric textured ceramic, in order to improve texturing degree of the ceramic and the piezoelectric performance; the powder has an important meaning for promoting research of the leadless piezoelectric ceramic.
Preparation method of sheet shaped potassium-sodium niobate powder
SHEN BO (author) / LI LINGYU (author) / BAI WANGFENG (author) / ZHANG YANG (author) / ZHAI JIWEI (author)
2016-01-27
Patent
Electronic Resource
English
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