| 纳米微孔氧化硅玻璃在与Nd3+-ZBLAN复合过程中的失透 |
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| 引用本文： | 袁绥华,曾小清,林凤英.纳米微孔氧化硅玻璃在与Nd3+-ZBLAN复合过程中的失透[J].功能材料与器件学报,2004,10(1):45-48. |
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| 作者姓名： | 袁绥华 曾小清 林凤英 |
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| 作者单位： | 西南师范大学,重庆,400715;中国科学院上海光学精密机械研究所,上海,201800 |
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| 基金项目： | NaturalSciencesFoundationofChina(No.60087002) |
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| 摘 要： | 在将玻璃片置于Nd3-ZBLAN熔体中对微孔灌注复合时,纳米微孔氧化硅玻璃片中部发生失透,失透部分出现50-100μm晶态鳞片,而鳞片中仍然存在纳米微孔.复合层仍处于非晶态.氧化硅被孔中氢氧化钠腐蚀形成晶籽,而孔中的高气压有助于结晶的发展.
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| 关 键 词： | 纳米微孔氧化硅玻璃 失透 结晶 |
Devitrification of nanoscale porous silica glasses in the composite process with Nd3+ -ZBLAN |
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| YUAN Sui-hua,ZENG Xiao-qing,LIN FENG-YING.Devitrification of nanoscale porous silica glasses in the composite process with Nd3+ -ZBLAN[J].Journal of Functional Materials and Devices,2004,10(1):45-48. |
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| Authors: | YUAN Sui-hua ZENG Xiao-qing LIN FENG-YING |
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| Abstract: | Devitrification was observed in the central portion of the nanoscale porous silica glasses which were sunk in Nd3+ -ZBLAN melt for filling in it's surface layer with Nd3 + -ZBLAN. The devitrified area has crystallization slices in the size of 50 - 100μ m with nanoscale pores and channels remain in the fish scale -like appearance. The composite layers remain amorphous. Silica etching by sodium hydroxide in the pores is considered to initiate the seeds of crystallization and the high pressure in the pores may facilitate the development of crystallization. |
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| Keywords: | nanoscale porous silica glass devitrification crystallization |
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