| 两步烧结法合成钇铝石榴石透明陶瓷 |
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| 引用本文： | 陈智慧,李江涛,胡章贵,徐久军.两步烧结法合成钇铝石榴石透明陶瓷[J].无机材料学报,2008,23(1):130-134. |
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| 作者姓名： | 陈智慧 李江涛 胡章贵 徐久军 |
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| 作者单位： | 1. 中国科学院研究生院, 北京 100049; 2. 中国科学院理化技术研究所, 北京 100080; 3. 大连海事大学, 大连 116026 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 用共沉淀法制备的平均粒径为50nm的钇铝石榴石纳米粉体为原料, 以0.5wt%的正硅酸已脂为烧结助剂, 采用两步烧结的工艺路线制备了YAG透明陶瓷. 将成型后的素坯在真空炉内首先加热到一个较高的温度(1700～1800℃), 再快速降温至较低温度(1500～1600℃), 并在此较低温度下保温10h. 通过抑制晶界迁移, 促进晶界扩散, 在较低的保温温度下制备了YAG透明陶瓷. 当两步烧结温度分别为1800℃和1550℃时, YAG透明陶瓷在可见光下的透过率为72%, 晶粒尺寸为6μm.
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| 关 键 词： | 两步烧结 YAG 透明陶瓷 |
| 文章编号： | 1000-324X（2008）01-0130-05 |
| 收稿时间： | 2007-02-08 |
| 修稿时间： | 2007-04-19 |
Fabrication of YAG Transparent Ceramics by Two Step Sintering Process |
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| CHEN Zhi-Hui,LI Jiang-Tao,HU Zhang-Gui,XU Jiu-Jun.Fabrication of YAG Transparent Ceramics by Two Step Sintering Process[J].Journal of Inorganic Materials,2008,23(1):130-134. |
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| Authors: | CHEN Zhi-Hui LI Jiang-Tao HU Zhang-Gui XU Jiu-Jun |
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| Affiliation: | 1. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China; 2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China; 3. Dalian Maritime University, Dalian 116026, China |
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| Abstract: | Well dispersed yttrium aluminum garnet (YAG) nanopowders with mean particle size of about 50nm synthesized by modified co-precipitation method were used to sinter YAG transparent ceramics with 0.5wt% TEOS as sintering additive by two step sintering process. The samples were first heated to a higher temperature ranging from 1700℃ to 1800℃, then cooled down to a lower temperature ranging from 1500℃ to 1600℃, and held at the lower temperature for 10h. Grain-boundary migration is suppressed and grain-boundary diffusion is promoted during the two step sintering process. When the two step sintering temperatures are 1800℃ and 1550℃, the microstructure of YAG is homogeneous with average grain size of 6μm without abnormal grain growth and the transmittance of the specimen is 72.0% |
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| Keywords: | two-step sintering process YAG transparent ceramics |
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