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化学学报
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化学学报 ›› 2005, Vol. 63 ›› Issue (15): 1439-1443. 上一篇    下一篇

研究论文

BST和BZT系列固溶体的均相沉淀法合成及表征

黄志良*1 2，汪奇林2， 张联盟1，许涛2，陈金民2， 梁邦兵2

  1. (1武汉理工大学材料复合新技术国家重点实验室 武汉 430070)
    (2武汉工程大学材料科学与工程学院 武汉 430073)
  • 投稿日期:2004-09-14 修回日期:2005-04-11 发布日期:2010-12-10
  • 通讯作者: 黄志良

Synthesis and Characterization of BST and BZT Solid Solutions through the Homogeneous Phase Precipitation Route

HUANG Zhi-Liang*1,2, WANG Qi-Lin2, ZHANG Lian-Meng1, XU Tao2, CHEN Jin-Min2, LIANG Bang-Bing2   

  1. (1 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,
    Wuhan University of Technology, Wuhan 430070)
    (2 Department of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430073)
  • Received:2004-09-14 Revised:2005-04-11 Published:2010-12-10
  • Contact: HUANG Zhi-Liang

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被引次数

13 | 3

采用均相沉淀法, 在低温(90 ℃)、低pH值(8～9)、短时间(3～3.5 h)条件下成功地合成了系列Ba1－xSrxTiO3 (BST)和BaZrxTi1－xO3 (BZT)固溶体. 通过XRD、化学分析法、SEM和AFM等手段表征了固溶体的结构、组成和形貌. 结果表明: BST, BZT的晶胞常数随组成呈线性关系, 符合Vegard定律, 该系列固溶体为完全互溶固溶体, 且目标产物组成精确, 颗粒为球形, 分布均匀. 初步讨论了复合矿化剂的均相化作用及羟基释放作用、分散剂对BST, BZT晶粒的聚集生长及分散机理.

关键词: 均相沉淀法, 掺杂, BST/BZT固溶体

A series of Ba1－xSrxTiO3 (BST) and BaZrxTi1－xO3 (BZT) solid solutions have been synthesized through the homogeneous phase precipitation route at low temperature (90 ℃) under low pH (8～9) in a short time (3～3.5 h). Structure, composition and morphology of those solid solutions were studied respectively by XRD, chemical analysis, SEM and AFM methods. The results showed that the cell parameters of them were linearly related with the composition of them, which was in accord with Vegard's law, and the powders of them had mutual miscibility, spherical shape, uniform distribution and precision component. The role of the compound mineralizer to make the reaction system form a homogeneous phase and release hydroxyl, and the mechanism of the aggregation growth of the BST and BZT particles in solutions with dispersants, were discussed briefly in this paper.

Key words: homogeneous phase precipitation route, adulteration, BST or BZT solid solution