| 稀土掺杂硼铝硅酸盐玻璃结构的NMR研究 |
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| 引用本文： | 陆春华,倪亚茹,崔运国,许仲梓.稀土掺杂硼铝硅酸盐玻璃结构的NMR研究[J].光学技术,2006,32(1):98-100. |
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| 作者姓名： | 陆春华 倪亚茹 崔运国 许仲梓 |
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| 作者单位： | 南京工业大学,材料科学与工程学院,南京,210009 |
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| 基金项目： | 江苏省自然科学基金
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江苏省高校自然科学基金 |
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| 摘 要： | 在Sm2O3掺杂BaO-B2O3-Al2O3-SiO2-Sm2O3(BBASS)玻璃系统的形成性能的研究基础上,借助MAS NMR以及差热测试技术,研究了玻璃的结构特点以及玻璃组成、热处理条件等因素对玻璃结构的影响。研究表明,在未掺稀土的BBAS玻璃结构中,硼氧多面体主要以BO3]、BO4]存在,铝氧多面体主要以AlO4]、AlO5]、AlO6]存在;随着BBAS中BaO含量的增加,硼氧三角体BO3]逐渐向BO4]转变,铝氧多面体中的AlO5]、AlO6]结构单元逐渐向AlO4]转变;稀土Sm3+具有较强迫积聚作用,能促使玻璃结构中的硼氧多面体形成巨大的网络结构;热处理对玻璃结构中硼氧多面体和铝氧多面体的配位结构影响不大。
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| 关 键 词： | 玻璃形成 玻璃结构 NMR |
| 文章编号： | 1002-1582(2006)01-0098-03 |
| 收稿时间： | 2004/11/26 |
| 修稿时间： | 2004年11月26 |
The NMR study of rare earth doped boro-alumino-silicate glasses |
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| LU Chun-hua,NI Ya-ru,CUI Yun-guo,XU Zhong-zi.The NMR study of rare earth doped boro-alumino-silicate glasses[J].Optical Technique,2006,32(1):98-100. |
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| Authors: | LU Chun-hua NI Ya-ru CUI Yun-guo XU Zhong-zi |
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| Abstract: | The characteristics of glass structure and some factors such as the component,the heat-treated conditions that affected the glass structure were studied,based on the research of the Sm-2O-3 doped BaO-B-2O-3-Al-2O-3-SiO-2-Sm-2O-3(BBASS) system glasses' forming performances,using MAS NMR spectroscopy and differential thermal analysis(DTA) testing technology.It was found that,in the structure of the BBAS glass without rare earth doped,the boron coordination were mainly of and ,the aluminum coordination were , and .With the content of the BaO increasing in the BBAS glass, graduated to ,and the and changed to gradually.Sm~(3 ) could accumulate the boron network because of its high field strength,forming a large network structure.Heat-treatment had little or none effect on the boron and aluminum coordination in the glass structrure. |
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| Keywords: | glass forming glass structure NMR |
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