| 模式识别对La_x Ba_(1-x)TiO_3纳米多晶制备工艺参数的设计 |
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| 引用本文： | 刘静波,刘国华,董倩,李文超.模式识别对La_x Ba_(1-x)TiO_3纳米多晶制备工艺参数的设计[J].北京科技大学学报,2001(1). |
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| 作者姓名： | 刘静波 刘国华 董倩 李文超 |
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| 作者单位： | 北京科技大学材料科学与工程学院!北京100083 |
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| 摘 要： | 利用溶胶－凝胶法合成钡钛前驱体，经干燥、焙烧等工艺制备了一系列镧掺杂钛酸钡纳米多晶粉体，利用ＸＲＤ确定物相及原始晶粒尺寸；通过模式识别中非线性映照及逆映照方法以原始晶粒尺寸作为目标值将试样分为３类，并通过分类图对工艺参数进行设计，按设计结果进行实验验证，获得了预期结果的多晶粉体，说明模式识别的应用有利于克服传统“炒菜式”合成方法的盲目性．
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| 关 键 词： | La_xBa_(1-x)TiO_3纳米多晶 工艺参数设计 模式识别 非线性映照 逆映照 |
Processing Optimization of La _x Ba_(1-x)TiO_3 Nano-size Polycrystal by Pattern Recognition |
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| LIU Jingbo,LIU Guohua,DONG Qian,LI Wenchao.Processing Optimization of La _x Ba_(1-x)TiO_3 Nano-size Polycrystal by Pattern Recognition[J].Journal of University of Science and Technology Beijing,2001(1). |
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| Authors: | LIU Jingbo LIU Guohua DONG Qian LI Wenchao |
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| Abstract: | The Ti-Ba-Sol precursor was prepared by sol-gel processing. In order to synthesize the nano- size polycrystals, drying and calcining were carried out. The preliminary crystalline size, target value, was de- termined by XRD-spread method. The samples were divided into three classes by pattern recognition and then the parameters were designed according to the figure. The experimental data showed that the predicted results were correspondent with the experimental ones. Therefore the conclusion could be drawn that pattern recog- nition did good to overcoming the disadvantage of conventional synthesis, cook-art chemical method. |
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| Keywords: | La _x Ba_(1-x)TiO_3nano-size polycrystals parameter designation pattern recognition non-linear mapping reverse mapping |
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