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首页> 外文期刊>ISIJ international >Impedance Measurement and Equivalent Circuit Analysis of Binary Alkali Silicate Melts
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Impedance Measurement and Equivalent Circuit Analysis of Binary Alkali Silicate Melts

机译：二元碱金属硅酸盐熔体的阻抗测量和等效电路分析

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摘要

Molten oxides such as silicate melts are used in glass manufacturing processes and the chemical structure of the melts affects their physical properties and hence, the efficiency of the process in which they are used and the quality of the manufactured product. Analysis of the chemical structures using Raman or nuclear magnetic resonance spectroscopy is time consuming due to the process of preparing quenched samples and the long relaxation time of atomic nuclei. Hence, a technique for faster structural analysis is desirable. In this study, in order to accumulate basic data for in-situ estimation of the network structures of molten oxides, we systematically investigated the relationships between the alkali oxide composition and measured impedance behavior. Nyquist plots were fitted using an equivalent circuit consisting of solution resistance, charge transfer resistance, and double layer capacitance. In the present samples, the solution resistance and charge transfer resistance decreased, and double layer capacitance increased with increasing K~+ concentration. These results were attributed to K~+ behaving as a charge carrier or the double layer becoming thinner due to increasing concentration of K~+ ions, which increased interfacial polarization. We observed that the solution and charge transfer resistances increased, and double layer capacitance decreased, in the order of Li, Na, and K. Hence, these resistances were dependent on the ionic radius, as well as the macrostructure of the melts.
机译：熔融氧化物（例如硅酸盐熔体）用于玻璃制造过程中，并且熔体的化学结构会影响其物理性能，因此会影响其使用过程的效率以及制成品的质量。由于制备淬灭样品的过程以及原子核的长弛豫时间，使用拉曼或核磁共振波谱分析化学结构非常耗时。因此，需要用于更快的结构分析的技术。在这项研究中，为了积累用于熔融氧化物网络结构的原位估计的基础数据，我们系统地研究了碱性氧化物组成与测得的阻抗行为之间的关系。使用由溶液电阻，电荷转移电阻和双层电容组成的等效电路拟合Nyquist图。在目前的样品中，溶液电阻和电荷转移电阻降低，双层电容随着K〜+浓度的增加而增加。这些结果归因于K +表现为电荷载流子或双层由于K +离子浓度的增加而变薄，这增加了界面极化。我们观察到，溶液和电荷转移电阻按Li，Na和K的顺序增加，双层电容减小。因此，这些电阻取决于离子半径以及熔体的宏观结构。

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  • 来源
    《ISIJ international》 |2019年第3期|421-426|共6页
  • 作者

    Yusuke HARADA; Noritaka SAITO; Kunihiko NAKASHIMA;

  • 作者单位

    Department of Materials Science and Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Department of Materials Science and Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Department of Materials Science and Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    alkali silicate melt; impedance spectroscopy;

    机译：碱金属硅酸盐熔体;阻抗谱;

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