| 溶胶—凝胶法制备Ba_(1-x)Sr_xTiO_3超微粉的干凝胶热分解过程 |
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| 引用本文： | 聂越峰,尹荔松,林国淙,张进修. 溶胶—凝胶法制备Ba_(1-x)Sr_xTiO_3超微粉的干凝胶热分解过程[J]. 中国粉体技术, 2005, 11(1): 12-15 |
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| 作者姓名： | 聂越峰 尹荔松 林国淙 张进修 |
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| 作者单位： | 1. 中山大学,光电材料与技术国家重点实验室,广东,广州,510275
2. 中山大学,光电材料与技术国家重点实验室,广东,广州,510275;中南大学,物理科学与技术学院,湖南,长沙,410075 |
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| 基金项目： | 广东省重大科技项目,编号:2001A1070202. |
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| 摘 要： | 采用溶胶凝胶法制备了纳米Ba1-xSrxTiO3铁电陶瓷粉体,并用红外—热重联用的方法,结合SEM和XRD实验结果,分析了前驱粉体的热分解产物及其中的化学过程。XRD和SEM测试结果表明,干凝胶在空气中800℃下保温2h得到纯钙钛矿结构的BST纳米晶粉体,晶粒尺寸大约为30nm。
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| 关 键 词： | 溶胶—凝胶法 纳米材料 热分解 |
| 文章编号： | 1008-5548(2005)01-0012-04 |
| 修稿时间： | 2004-07-09 |
Study on Dry Gel''''s Thermal Decomposition Process in Preparing Nanometer Ba1- xSrxTiO3 by Sol- gel Method |
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| NIE Yue-feng,YIN Li-song,LIN Guo-cong,ZHANG Jin-xiu. Study on Dry Gel''''s Thermal Decomposition Process in Preparing Nanometer Ba1- xSrxTiO3 by Sol- gel Method[J]. China Powder Science and Technology, 2005, 11(1): 12-15 |
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| Authors: | NIE Yue-feng YIN Li-song LIN Guo-cong ZHANG Jin-xiu |
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| Affiliation: | NIE Yue-feng1,YIN Li-song1,2,LIN Guo-cong1,ZHANG Jin-xiu1 |
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| Abstract: | Ba1—x SrxTiO3 ferroelectric ceramics is prepared by sol—gel method. Using the TGA—FTIR analysis, and the results from SEM and XRD experiments, the substances produced in the thermal decomposition of precursor powder, as well as the chemical reactions invloved in this process are analysed.As the results from the XRD and SEM meansurement, the dry gel is kept in the open air at the temperature of 800 ℃ for 2 h, then the nanometer peroviskite- structured BST crystal is obtained, which is approximately 30 nm in size. |
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| Keywords: | sol—gel method nanometer materials thermal decomposition |
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