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pH值对BaTiO3纳米粉体性能的影响

栾伟玲; 高濂; 郭景坤   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室; 上海 200050
  • 收稿日期:1998-04-09 修回日期:1998-04-30 出版日期:1999-04-20 网络出版日期:1999-04-20

Effect of pH Value on the Property of BaTiO3 Nano Powder

LUAN Wei-Ling; GAO Lian; GUO Jing-Kun   

  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China
  • Received:1998-04-09 Revised:1998-04-30 Published:1999-04-20 Online:1999-04-20

摘要: 本文研究了溶胶-凝胶过程中不同pH值条件下制得钛酸钡纳米粉的性能,从双电层理论及反应机理分析讨论了pH值对胶体的形成及团聚状态的影响,得到了反应的优化条件(溶液的pH值应控制在8以上),制得粒径小、颗粒分布均匀、少团聚的BaTiO3纳米粉体.

关键词: 钛酸钡, 溶胶-凝胶, PH值

Abstract: The property of BaTiO3 nano powder prepared by the sol-gel method at different pH values was investigated.The effect of pH value on gel formation and aggregates was discussed with double electric layer theory and reaction mechanism.The optimal preparing condition of the powder was proposed (pH>8).

Key words: BaTiO3, sol-gel, pH value

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