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| MgAl2O4纳米透明陶瓷的制备及其透明机理 | |
| 引用本文： | 齐建起,卢铁城,常相辉,雷牧云,黄存新. MgAl2O4纳米透明陶瓷的制备及其透明机理[J]. 材料研究学报, 2006, 20(4): 367-371 |
| 作者姓名： | 齐建起 卢铁城 常相辉 雷牧云 黄存新 |
| 作者单位： | 1. 四川大学物理系和辐射物理及技术教育部重点实验室,成都,610064 2. 四川大学物理系和辐射物理及技术教育部重点实验室,成都,610064;中科院国际材料物理中心,沈阳,110016 3. 中非集团人工晶体研究院,北京,100018 |
| 基金项目： | 国家自然科学基金;霍英东教育基金;四川省杰出青年学科带头人培养计划 |
| 摘 要： | 用传统合成金刚石用的六面顶压机，使用工艺简单的高温焙烧法得到的MgAl2O4纳米粉体，采用超高压烧结法分别在较低温度800-1100℃和较高压强3—5GPa下尝试进行了纳米透明陶瓷的制备，得到了平均粒径约为50—75nm的MgAl2O4纳米透明陶瓷，发现烧结陶瓷的最佳温度为1000℃，最佳压力为4GPa．样品的密度直接决定样品的透明度，粉体的性质对透明度也有很大的影响，透明陶瓷的纳米化使其在光学透过率方面具有独特优势． |
| 关 键 词： | 无机非金属材料 纳米透明陶瓷 超高压烧结 透明机理 |
| 文章编号： | 1005-3093(2006)04-0367-05 |
| 收稿时间： | 2005-07-12 |
| 修稿时间： | 2006-04-30 |
Investigation on preparation and transparent mechanism of MgAl2O4 transparent nano-ceramics |
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| QI Jianqi,LU Tiecheng,CHANG Xianghui,LEI Muyun,HUANG Cunxin. Investigation on preparation and transparent mechanism of MgAl2O4 transparent nano-ceramics[J]. Chinese Journal of Materials Research, 2006, 20(4): 367-371 | |
| Authors: | QI Jianqi LU Tiecheng CHANG Xianghui LEI Muyun HUANG Cunxin |
| Abstract: | Using MgAl2O4 nano-powder obtained by unique high-temperature-calcining methods as the raw material, with a six-pressure-source machine which is usually used for diamond synthesis, MgAl2O4 transparent nano-ceramic has been successfully prepared for the first time by ultrahigh pressure sintering at low temperature from 800 to 1100 T3 under high pressures from 3 to 5 GPa. The mean grain size of the obtained transparent ceramic is from 50 to 75 nm, and the optimal sintering condition should be at the temperature of -1000 T3 under the pressure of 4 GPa. The transmittance of ceramic is affecteded dominately by its density, also is affected by phase and crystallization of the raw powder, and the grain nanolization of MgAl2O4 transparent ceramic provides unique advantages to light transmission. |
| Keywords: | MgAl2O4 |
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