| 用于YAG透明陶瓷的喷雾造粒改性粉体的制备 |
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| 引用本文： | 刘媛,郭旺,黄志,黄秋风,唐飞,曹永革.用于YAG透明陶瓷的喷雾造粒改性粉体的制备[J].北京科技大学学报,2010,32(12). |
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| 作者姓名： | 刘媛 郭旺 黄志 黄秋风 唐飞 曹永革 |
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| 作者单位： | 1. 中国科学院福建物质结构研究所,福州350002;中国科学院研究生院,北京100049
2. 中国科学院福建物质结构研究所,福州,350002 |
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| 基金项目： | 福建省科技计划重点项目(No.2008H0040) |
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| 摘 要： | 通过喷雾造粒方法对共沉淀合成的纳米粉体进行改性,制备出球形的纳米颗粒.用XRD对粉体进行物相分析;用TEM观察了改性前粉体的颗粒形状、尺寸大小和团聚情况;用SEM观察改性前后粉体的团聚体的颗粒形状、尺寸大小与分散性,以及陶瓷热腐蚀抛光后的表面形貌.结果表明:PVB添加质量分数1.0%为最优添加量;改性后粉体所制素坯的密度显著提高,从而影响陶瓷的致密度和晶界形貌;经真空烧结制备出相对密度达99.95%的无孔净晶界YAG透明陶瓷,陶瓷晶粒的平均尺寸为10μm左右,尺寸分布较均匀,晶界清晰,晶粒中与晶界处较干净,无杂质与气孔的存在.
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| 关 键 词： | 喷雾造粒 纳米粉体 改性 Nd∶YAG陶瓷 透明陶瓷 密度 |
Preparation of modified powders by spray drying for transparent ceramics of yttrium aluminum garnet |
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| LIU Yuan,GUO Wang,HUANG Zhi,HUANG Qiu-feng,TANG Fei,CAO Yong-ge.Preparation of modified powders by spray drying for transparent ceramics of yttrium aluminum garnet[J].Journal of University of Science and Technology Beijing,2010,32(12). |
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| Authors: | LIU Yuan GUO Wang HUANG Zhi HUANG Qiu-feng TANG Fei CAO Yong-ge |
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| Institution: | LIU Yuan1,2),GUO Wang1),HUANG Zhi1,HUANG Qiu-feng1),TANG Fei1,CAO Yong-ge1)1)Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China2)Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Nanopowders synthesized by a co-precipitation method were modified by spray drying and spherical particles were prepared for transparent ceramics of yttrium aluminum garnet.The phases of the powders were analyzed by X-ray diffraction(XRD);the shape,size and agglomeration of the powders before modification were studied by transmission electron microscopy(TEM);the shape,size and dispersion of the powders before and after modification were characterized and the surface morphology of polished ceramics after hot... |
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