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首页> 外文会议>Formation, structure and properties of glasses >STRUCTURAL STUDIES ON THE GEL TO GLASS TRANSITION IN xLi_2O-(15-x)Na_2O-15B_2O_3-70SiO_2 SYSTEM
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STRUCTURAL STUDIES ON THE GEL TO GLASS TRANSITION IN xLi_2O-(15-x)Na_2O-15B_2O_3-70SiO_2 SYSTEM

机译：xLi_2O-（15-x）Na_2O-15B_2O_3-70SiO_2体系中凝胶向玻璃态转化的结构研究

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摘要

xLi_2O-(15-x)Na_2O-15B_2O3-70SiO_2 system gels were prepared by sol-gel process using tetraethoxysilane (TEOS), boric acid, sodium nitrate, lithium carbonate as raw materials. The structure changes of the gels to glass formation at different stages of heat treatment were studied by FTIR spectra, DTA, XRD and SEM. As the heat treatment temperature increased, Si-OH and Si-OC_2H_5 groups decreased and disappeared, Si-O-B and B-O bonds gradually formed. The intensity of these peaks at 672, 830 cm~(-1) had a maximum at 400℃. The effects of Na~+ and Li~+ ions on the coodination number of boron during heat treatment were discussed.
机译：以四乙氧基硅烷（TEOS），硼酸，硝酸钠，碳酸锂为原料，通过溶胶-凝胶法制备了xLi_2O-（15-x）Na_2O-15B_2O3-70SiO_2体系凝胶。通过FTIR光谱，DTA，XRD和SEM研究了在热处理的不同阶段凝胶对玻璃形成的结构变化。随着热处理温度的升高，Si-OH和Si-OC_2H_5基团减少并消失，Si-O-B和B-O键逐渐形成。这些峰在672、830 cm〜（-1）处的强度在400℃时达到最大值。讨论了Na〜+和Li〜+离子对热处理过程中硼的共价数的影响。

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  • 来源
  • 会议地点 Beijing(CN)
  • 作者

    Zhou Meifang; Cheng Jijian; Zhou Saiyu;

  • 作者单位

    Research Institute of Glasses and Ceramics, East China University of Science and Technology, Shanghai 200237, China;

    Research Institute of Glasses and Ceramics, East China University of Science and Technology, Shanghai 200237, China;

    Research Institute of Glasses and Ceramics, East China University of Science and Technology, Shanghai 200237, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 玻璃工业;
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