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无机材料学报

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用柠檬酸盐-凝胶法低温合成单相Ba(Mg1/3Ta2/3)O3

卞建江; 赵梅瑜; 殷之文   

  1. 中国科学院上海硅酸盐研究所; 上海200050
  • 收稿日期:1997-03-03 修回日期:1997-03-18 出版日期:1998-02-20 网络出版日期:1998-02-20

Low-Temperature Synthesis of Pure Ba(Mg1/3Ta2/3)O3 Microwave Dielectric Powder by Citrate Gel-Processing Route

BIAN Jian-Jiang; ZHAO Mei-Yu; YIN Zhi-Wen   

  1. Shanghai Institute of Ceramics; ChInese Academy of Sciences Shanghai 200050 China
  • Received:1997-03-03 Revised:1997-03-18 Published:1998-02-20 Online:1998-02-20

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摘要： 本文利用XTD、DTA、TGA、SEM、TEAI等分析手段研究了用柠檬酸盐-凝胶法低温（600℃）合成单相Ba（Mg1／3Ta2／3）O3的方法,结果发现，与传统的固相反应合成BMT的方法相比，柠檬酸盐溶胶-凝胶法能在600℃的温度下合成单相BAT，合成的粉体具有10～20nm的单颗粒尺寸．

关键词: BMT微波介质, 柠檬酸盐-凝胶法, 低温合成

Abstract: A new citrate gel-processing route to synthesize pure BMT powder at low-temperature (600℃) was proposed and investigated by XRD, DTA and
SEM methods, in which self-prepared Ta-citrate was adopted as the starting precursor. The conventional approach from high purity Ta2O5 powder
was also as starting material to prepare BMT powder for comparison. It was discovered that a pure BMT phase with pseudocubic perovskite strcuture was
formed at much lower temperature (600℃) and nano-particle size powder (100～200nm) was obtained by the citrate gel-process. Whereas, the synthesizing
temperature of conventional one was more than 1250℃.

Key words: BMT microwave dielectrics, citrate-gel process, low-temperature synthesis

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