| CaO-Y2O3添加剂对AlN陶瓷显微结构及性能的影响 |
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| 引用本文： | 黄小丽,马庆智,李发,刘慧卿.CaO-Y2O3添加剂对AlN陶瓷显微结构及性能的影响[J].无机材料学报,2002,17(2):277. |
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| 作者姓名： | 黄小丽 马庆智 李发 刘慧卿 |
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| 作者单位： | 1. 北京信息工程学院, 北京 100101; 2. 北京真空电子技术研究所; 北京 100016 |
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| 摘 要： | 研究了掺杂ＣａＯ－Ｙ２Ｏ３热压烧结和常压烧结ＡｌＮ陶瓷的性能和显微结构．结果表明：热压烧结ＡｌＮ陶瓷的第二相为Ｙ３Ａｌ５Ｏ１２，常压烧结ＡｌＮ陶瓷的第二相为Ｙ３Ａｌ５Ｏ１2和Ｃａ３Ｙ２Ｏ６；热压烧结ＡｌＮ的第二相体积百分数和晶格氧含量均低于常压烧结；热压烧结ＡｌＮ陶瓷的微观结构良好，其热导率达到２００Ｗ／ｍ·Ｋ．
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| 关 键 词： | 氮化铝 氧化钙-氧化钇 显微结构 热导率 |
| 收稿时间： | 2001-03-12 |
| 修稿时间： | 2001-04-16 |
Influence of CaO-Y2O3 as Sintering Aid on the Microstructure and Properties of AlN Ceramics |
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| HUANG Xiao-Li,MA Qing-Zhi,LI Fa,LIU Hui-Qing.Influence of CaO-Y2O3 as Sintering Aid on the Microstructure and Properties of AlN Ceramics[J].Journal of Inorganic Materials,2002,17(2):277. |
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| Authors: | HUANG Xiao-Li MA Qing-Zhi LI Fa LIU Hui-Qing |
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| Affiliation: | 1.; Beijing Information Technology Institute Beijing 100101; China; 2. Beijing Vacuum Electronics Research Institute Beijing 100016; China |
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| Abstract: | The property and microstructure of hot-pressure and normal-pressure sintered AlN ceramics doped with CaO-Y2O3 were studied in this paper. The results obtained show that the second phase in the hot-pressure sintered AlN is Y3Al5O12 and that in the normal-pressure sintered AlN is Y3Al5O12 and Ca3Y2O6. The volume fraction of the second phase and the oxygen content dissolved in the AlN lattice of hot-pressure sintered AlN ceramics are lower than that of normal-pressure sintered AlN. The hot-pressure sintered AlN ceramic has good microstructure and high thermal conductivity of 200W/m·K. |
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| Keywords: | aluminum nitride calcia-yttria microstructure thermal conductivity |
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