| 纳米晶添加氧化铝粉体的低温烧结研究 |
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| 引用本文： | 李江,潘裕柏,宁金威,黄莉萍,郭景坤.纳米晶添加氧化铝粉体的低温烧结研究[J].无机材料学报,2003,18(6):1192-1198. |
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| 作者姓名： | 李江 潘裕柏 宁金威 黄莉萍 郭景坤 |
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| 作者单位： | 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室 上海 200050 |
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| 基金项目： | 国家973资助项目(G2000067204-2)，高性能陶瓷与超微结构国家重点实验室资助项目(2310000) |
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| 摘 要： | 以湿化学法制备的纳米α-Al2O3粉体作为添加剂,MgO和SiO2为烧结助剂,对商用γ-Al2O3粉体预处理后,采用无压烧结工艺,有效的降低了烧结温度.在1450℃制备了高性能的氧化铝陶瓷,并对添加α-Al2O3纳米晶的作用机理进行了研究.
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| 关 键 词： | 氧化铝陶瓷 低温烧结 湿化学法 纳米晶 |
| 文章编号： | 1000-324X(2003)06-1192-07 |
| 收稿时间： | 2002-9-4 |
| 修稿时间： | 2002年9月4日 |
Low Temperature Sintering of Bimodal Alumina Powder Mixtures with Nanocrystalline Component |
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| LI Jiang,PAN Yu-Bai,NING Jin-Wei,HUANG Li-Ping,GUO Jing-Kun.Low Temperature Sintering of Bimodal Alumina Powder Mixtures with Nanocrystalline Component[J].Journal of Inorganic Materials,2003,18(6):1192-1198. |
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| Authors: | LI Jiang PAN Yu-Bai NING Jin-Wei HUANG Li-Ping GUO Jing-Kun |
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| Affiliation: | State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China |
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| Abstract: | Nanocrystalline α-Al2O3 powder was prepared by a wet-chemical method calcining the dry NH4Al(OH)2CO3 precursor synthesized from NH4Al(SO4)2 and NH4HCO3. Alumina ceramics were fabricated by pressureless sintering process at 1450℃ from bimodal alumina powder mixtures with the prepared nanocrystalline component using MgO and SiO2 as additives. The effect of nanocrystalline α-Al2O3 component on alumina ceramics was also studied. The materials fabricated have better mechanical properties. |
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| Keywords: | Al2O3 ceramics low temperature sintering wet-chemical method nanocrystalline |
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