| 液相法合成粉体中冷冻干燥对团聚的影响 |
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| 引用本文： | 武淑艳,吴明忠,王军,刘洪丽.液相法合成粉体中冷冻干燥对团聚的影响[J].佳木斯大学学报,2007,25(1):59-60. |
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| 作者姓名： | 武淑艳 吴明忠 王军 刘洪丽 |
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| 作者单位： | 佳木斯大学材料科学与工程学院 黑龙江佳木斯154007 |
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| 基金项目： | 佳木斯大学校科研和教改项目
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黑龙江省自然科学基金 |
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| 摘 要： | 采用化学共沉淀法制备钛酸钡电子陶瓷粉体,在共沉淀产物的干燥过程采用恒温干燥和冷冻干燥两种方法,利用扫描电镜观察干燥后的共沉淀产物和煅烧后粉体形貌,以比较冷冻干燥对粉体颗料团聚的影响.结果表明,所制得的粉体颗粒平均尺寸约为200nm,采用冷冻干燥的共沉淀产物的团聚体比恒温干燥的小,说明在液相法制备超细粉体过程中采用冷冻干燥可以减轻颗粒之间的团聚.
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| 关 键 词： | 超细粉 团聚 冷冻干燥 化学共沉淀 钛酸钡 液相法制备 合成粉体 冷冻干燥 影响 Process Liquid Phase Synthesized Powder Agglomeration 颗粒平均尺寸 干燥过程 超细粉体 团聚体 结果 比较 粉体形貌 煅烧 扫描电镜观察 利用 方法 |
| 文章编号： | 1006-1402（2007）01-0059-02 |
| 收稿时间： | 2006-10-31 |
| 修稿时间： | 2006年10月31 |
The Influence of Freeze-drying on Agglomeration of Powder Synthesized from Liquid Phase Process |
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| WU Shu-yan,WU Ming-zhong,WANG Jun,LIU Hong-li.The Influence of Freeze-drying on Agglomeration of Powder Synthesized from Liquid Phase Process[J].Journal of Jiamusi University(Natural Science Edition),2007,25(1):59-60. |
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| Authors: | WU Shu-yan WU Ming-zhong WANG Jun LIU Hong-li |
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| Institution: | College of Materials science and technology,Jiamusi University,Jiamusi 154007,China |
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| Abstract: | Barium titanate electronic ceramic powder was synthesized through chemical coprecipitation in this article,and constant temperature drying and freeze-drying were respectively adopted in the drying process of the coprecipitation product.Dried coprecipitation product and calcined powder were observed with scanning electron microscope(SEM) to study the influence of freeze drying on the particle agglomeration.The result indicates that the mean size of powder particles is about 200nm,the agglomerated particle after freeze-drying is smaller than that of after constant temperature drying,that is,freeze-drying can relieve particle's agglomeration in the super fine powder synthesizing process through liquid phase method. |
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| Keywords: | super fine powder agglomeration freeze-drying barium titanate chemical coprecipitation |
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