氟锆酸盐纳米微晶玻璃的制备及其特性研究
文献类型：学位论文
| 作者 | 赖杨琼 |
| 学位类别 | 硕士 |
| 答辩日期 | 2007 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 张军杰 |
| 关键词 | 氟锆酸盐玻璃 纳米微晶玻璃 光谱性质 物化性质 |
| 其他题名 | Preparation and properties of fluorozirconate nanocrystallized glasses |
| 中文摘要 | 本论文的研究目的在于探索出一种新型的具有优良机械性能、中红外透过性能和物化性能的氟锆酸盐纳米微晶玻璃。通过对氟锆酸盐纳米微晶玻璃的制备工艺，物理化学性质和光谱性质的研究，为氟锆酸盐纳米微晶玻璃应用于制备红外光学器件和光纤放大器等方面提供一定的技术基础。 论文第一章首先介绍了微晶玻璃的特点、分类和发展概况；然后详细介绍了氟锆酸盐玻璃的特点以及氟锆酸盐微晶玻璃的研究概况。最后根据国内外氟锆酸盐纳米微晶玻璃的研究状况，提出了本课题的研究依据和研究内容。 论文第二章介绍了实验过程与光谱计算理论分析。给出了氟锆酸盐玻璃及氟锆酸盐纳米微晶玻璃样品的制备过程，样品物化性质和光谱性质的测试方法，介绍了用于稀土离子光谱计算的Judd-Ofelt 理论和McCumber理论。 论文第三章研究了组成为50ZrF4-33BaF2-10YF3-5AlF3-2LaF3 (FZ1)、55ZrF4-20BaF2-16YF3-5AlF3-4LaF3 (FZ2)和55ZrF4-20BaF2-14YF3-5AlF3-6LaF3 (FZ3) 这三种氟锆酸盐纳米微晶玻璃的制备工艺，成功地制备出透明的纳米微晶玻璃，并详细地研究了热处理条件对纳米微晶玻璃红外透过性能的影响。通过研究认为，相比基质玻璃FZ2，其热处理后制得的微晶玻璃的红外透过率均有不同程度的降低，但透过率均在70％左右，并且其红外截至波长为7.5μm。大量实验表明，FZ2更合适于制备透明的氟锆酸盐纳米微晶玻璃，其稳定的热处理工艺是先将基质玻璃在368℃处保温成核10小时或者15小时，然后在390℃处晶化4小时。 论文第四章首先讨论了不同铥浓度掺杂的氟锆酸盐玻璃55ZrF4-20BaF2-16YF3-5AlF3-4LaF3的光谱性质，接着研究了组成为55ZrF4-20BaF2-14.8YF3-5AlF3-4LaF3-1.2TmF3的纳米微晶玻璃的制备工艺，并成功的制备出了透明的氟锆酸盐纳米微晶玻璃。最后详细地分析了透明纳米微晶玻璃的物化和光谱性质。研究发现，纳米微晶玻璃中晶粒的尺寸在31～45nm左右，与基质玻璃相比纳米微晶玻璃的硬度有很大的增大，同时纳米微晶玻璃的密度也有所增加；研究还发现Tm3+离子在纳米微晶玻璃中的光谱特性也有所提高，相比基质玻璃，Tm3+离子在微晶玻璃中的Judd-Ofelt强度参数Ωt（t＝2，4，6）减小，并且其在微晶玻璃中的吸收截面也有所增大。 论文的最后一部分为本论文的结论。在结论里，系统地总结了全文所得到的主要实验结论。 |
| 英文摘要 | The goal of this paper is to search for a novel fluorozirconate nanocrystallized glasses with fine mechanical property，high mid-infrared transmission and good physical and chemical properties.The preparation and physical chemical characters and spectral properties of transparent fluorozirconate nanocrystallized glasses have been studied. This research provided a foundation for the development of window materials of mid-infrared transmission and optical fiber amplifier. In chapter 1, the characteristic and the developments of the glass-ceramic were overviewed firstly. Then the characteristic of the fluorozirconate glass and the investigation of fluorozirconate nanocrystallized glasses were introduced. Finally, the studied content and idea of this dissertation were presented according to the progress of fluorozirconate nanocrystallized glasses. In chapter 2, the experiment method and theory basis were described, and the content mainly involved in the glass and nanocrystallized glass samples preparation, some properties testing and the spectrum theory calculating. In chapter 3, the preparation process of nanocrystallized glasses 50ZrF4-33BaF2-10YF3-5AlF3-2LaF3、5ZrF4-20BaF2-16YF3-5AlF3-4LaF3 and 55ZrF4-20BaF2-14YF3-5AlF3-6LaF3 were studied, and transparent fluorozirconate nanocrystallized glasses were prepared successfully, also the effect of heat-treatment condition on mid-infrared transmission properties were investigated in detail. The result showed that the transmission in mid-infrared region decreases slightly, and all the transmission is about 70%, also IR cut-off wavelength is about 7.5μm. A lot of experiments indicated that the glass 55ZrF4-20BaF2-16YF3-5AlF3-4LaF3 was suit for preparing transparent fluorozirconate nanocrystallized glass, and the steady techniques for this glass is 368℃ for 10h or 15h and then 390℃for 4h. In chapter 4, the effect of Tm3+ ion concentration on the spectroscopic properties in the ZrF4-BaF2-YF3-AlF5-LaF3 fluorozirconate glasses was studied firstly, and then the preparation process of nanocrystallized glasses 55ZrF4-20BaF2-14.8YF3-5AlF3-4LaF3-1.2TmF3 was studied, and transparent fluorozirconate nanocrystallized glasses were prepared successfully. At last, the physical and chemical properties and spectroscopic properties were studies in detail. The dimension of the crystallines in the transparent fluorozirconate nanocrystallized glasses were about 31~45nm, the more importance was the microhardness of the transparent fluorozirconate nanocrystallized glasses were larger than that of the original glass, meanwhile, thedensity of the nanocrystallized glasses were larger than the based glass. Spectroscopic properties of Tm3+ in the nanocrystallized glasses were improved, compared with the based glass, the Judd-Ofelt parameter Ωt (t＝2, 4, 6) were smaller and the absorption cross-section were larger in transparent fluorozirconate nanocrystalline glasses. In the last chapter, the main conclusions of the dissertation were systematically generalized. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16627]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 赖杨琼. 氟锆酸盐纳米微晶玻璃的制备及其特性研究[D]. 中国科学院上海光学精密机械研究所. 2007. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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