Raman Spectroscopic Study on the Structure of Oxide Melts containing Fluoride

含氟氧化物熔体结构的拉曼光谱研究

• 批准号: 60550467
• 负责人: IGUCHI Yasutaka
• 金额: $ 1.15万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550467/
• 关键词: Raman spectrum; Raman spectra; Oxide Melt; Slag; Fluoride; Glass; Structure Analysis; 融体の構造

In order to elucidate the structure of oxide melts containing fluorine, the quantitative informations are necessary concerning the structure of silicates and aluminates. In this study, at first, a Raman spectral study has been carried out on the structure of the glassy binary silicates containing alkali or alkaline earth oxides and ternary silicates with <Al_2O_3> or <TiO_2> , where an argon-ion laser beam of 4880 A has been used as an exciting light. The obtained Raman spectra were deconvoluted with the Gaussian function and the fraction of each silicate anion was evaluated relating to the number of non-bridging oxygens per each silicon atom. And the effects of anions on the Si-O bondings and behavior of <Al^(3+)> and <Ti^(4+)> were discussed. On the basis of the results described above, Raman measurements of the glassy CaO- <SiO_2> - <CaF_2> and CaO- <Al_2O_3> - <CaF_2> samples melted in the closed crucible and deconvolution of the spectra have been made and the following conclusions were obtained.(1) <CaF_2> in the CaO- <SiO_2> binary basic slags behaves as a diluent and diluent and does not have any effect on the structure of silicates, in which the basicity is larger than unity. On the other hand, a part of <CaF_2> added breaks the silicate networks at the acid slags. (2) The fraction of <CaF_2> which acts as a modifier increases with decrease in the basicity and three dimensional network is broken to chains of silicates. (3) The existence of the silicon-fluorine bonding in the CaO- <SiO_2> - <CaF_2> system with the basicity below 1 was confirmed, and the Raman band caused by the Si-F bonding was asigned. (4) Addition of <CaF_2> to the CaO- <Al_2O_3> binary slags has no effects on the structure of aluminates. <CaF_2> behaves only as a diluent to the CaO- <Al_2O_3> system.

为了阐明含氟氧化物熔体的结构，需要有关硅酸盐和铝酸盐结构的定量信息。本研究首先用4880 A的氩离子激光束作为激发光，对含碱金属和碱土金属氧化物的二元硅酸盐玻璃和含或不含碱金属和碱土金属氧化物的三元硅酸盐玻璃的结构进行了拉曼光谱研究<Al_2O_3><TiO_2>。将获得的拉曼光谱用高斯函数去卷积，并评价每种硅酸盐阴离子的分数与每种硅原子的非桥接氧的数量相关。讨论了阴离子对Si-O键的影响以及&lt;Al^（3+）&gt;和&lt;Ti^（4+）&gt;的行为。在上述结果的基础上，对在封闭坩埚中熔化的玻璃状CaO<SiO_2>-<CaF_2>和CaO<Al_2O_3>-<CaF_2>样品进行了拉曼测量和光谱的解卷积，并得到以下结论。(1)在<CaF_2>CaO-<SiO_2>二元碱性渣系中，碱度大于1的硅酸盐的结构不受影响，主要起稀释剂和稀释剂的作用。另一方面，部分添加剂<CaF_2>破坏了酸渣处的硅酸盐网络。(2)其<CaF_2>作为改性剂的分数随着碱度的降低而增加，并且三维网络被破坏成硅酸盐链。(3)证实了碱度小于1的CaO-2体系中存在硅-氟键<SiO_2><CaF_2>，并给出了由硅-氟键引起的拉曼谱带。(4)在<CaF_2>CaO-<Al_2O_3>二元渣系中加入Al 2 O3对铝酸盐的结构没有影响. <CaF_2>仅作为CaO-体系的稀释剂<Al_2O_3>。

项目成果

井口泰孝: 日本金属学会誌. 52. (1988)

Yasutaka Iguchi：日本金属研究所杂志 52。（1988）

Yasutaka Iguchi, Youichi Funaoka, Yuichiro Nishina and Shiro Ban-ya: "Raman Spectroscopic Study on the Structure of Oxide Melts containing Fluoride" Journal of the Japan Institute of Metals. 52. (1988)

Yasutaka Iguchi、Youichi Funaoka、Yuichiro Nishina 和 Shiro Ban-ya：“含氟化物的氧化物熔体结构的拉曼光谱研究”日本金属学会杂志。