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无机材料学报

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NaOH-KOH熔盐中合成BaTiO3反应过程电导率的变化

白玉霞; 王淑兰; 厉英   

  1. 东北大学理学院 沈阳 110004
  • 收稿日期:2001-06-04 修回日期:2001-07-06 出版日期:2002-05-20 网络出版日期:2002-05-20

Variations of Conductivities of NaOH-KOH Molten Salt during the Process of Synthesis of BaTiO3

BAI Yu-Xia; WANG Shu-Lan; LI Ying   

  1. Box 332; Northeastern University; Shenyang 110004; China
  • Received:2001-06-04 Revised:2001-07-06 Published:2002-05-20 Online:2002-05-20

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摘要： 用交流阻抗谱法测量了３５０℃时共晶成分的ＮａＯＨ－ＫＯＨ熔盐中加入ＴｉＯ２和ＢａＣＯ3时体系电导率的变化,准确给出了３５０℃共晶成分ＮａＯＨ－ＫＯＨ熔盐的电导率为１．０５３Ω－１·ｃｍ－１,确认了在ＮａＯＨ－ＫＯＨ熔盐中ＴｉＯ２与ＢａＣＯ３反应,生成ＢａＴｉＯ３时熔盐不参与反应．实验数据表明３５０℃ＴｉＯ２与ＢａＣＯ３在共晶成分的ＮａＯＨ－ＫＯＨ熔盐中的溶解过程可在短时间内达到平衡．

关键词: BaTiO3, 电导率, NaOH－KOH共晶熔盐

Abstract: The conductivities of eutectic NaOH-KOH molten salt during the process of forming BaTiO3 from BaCO3 and TiO2 were measured by A.C. impedance method at 350℃. Results showed that the accurate conductivity of eutectic NaOH-KOH molten salt at 350℃ was 1.053Ω-1· cm-1. The dissolution of BaCO3 and TiO2 in NaOH-KOH of eutectic component at 350℃ reached equilibrium in a short time, and NaOH and KOH did not react with BaCO3 and TiO2 at 350℃.

Key words: BaTiO3, conductivity, NaOH-KOH eutectic salt

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