Effect of Zr content on microstructure of BaTi₂O₅ powders prepared by sol-gel method

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• 作者：Yiping Gong ; Changyong Liu ; Dongyun Guo ; ^{guodongyun@gmail.com} ; Chuanbin Wang ; Qiang Shen ; Lianmeng Zhang
• 关键词：Powder technology ; Sol&ndash ; gel preparation ; Zr content ; Sintering temperature ; Crystal structure
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：15 April, 2012
• 卷：73
• 期：Complete
• 页码：72-74
• 文件大小：776 K

摘要

BaZr_xTi_{2 鈭?#xA0;x}O₅ powders (x = 0, 0.01, 0.02, 0.03 and 0.04) were prepared by the sol-gel method. The effect of the Zr content and sintering temperature on crystal structure and microstructure was investigated. The good-crystallization BaZr_xTi_{2 鈭?#xA0;x}O₅ powders with BaTi₂O₅ phase were obtained as the sintering temperature was at and above 1000 掳C. With increasing the Zr content, the lattice parameters of a-, b- and c-axes increased. As the sintering temperature increased, the grains grew larger. At high sintering temperature (more than 1000 掳C), the BaZr_xTi_{2 鈭?#xA0;x}O₅ powders consisted of faceted grains due to its monoclinic structure.