Rupture Phenomena of Molten Alkali Silicate Thin Films

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著者

    • SASAKI Yasushi
    • Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
    • ISHII Kuniyoshi
    • Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
    • ARAHATA Daisuke
    • Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
    • IGUCHI Manabu
    • Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University

抄録

The rupture length of the iron bearing alkali silicate thin films (the K<sub>2</sub>O· 2SiO<sub>2</sub>, K<sub>2</sub>O·2SiO<sub>2</sub> and Na<sub>2</sub>O·2SiO<sub>2</sub> –Fe<sub>2</sub>O<sub>3</sub> systems) are measured as a function of the silica content, the Fe<sub>2</sub>O<sub>3</sub> content, temperature, and the drawn out rate. In these melts, it is found that the rupture length, <I>L</I>, depends on the drawn-out rate, ν, at the high drawn-out rate conditions, but is independent from the drawn-out rate at the low drawn-out conditions. For all the systems of K<sub>2</sub>O–SiO<sub>2</sub> and Na<sub>2</sub>O–SiO<sub>2</sub> –Fe<sub>2</sub>O<sub>3</sub>, the rupture length (<I>L</I>) at the high drawn out rate conditions is found to be proportional to the -2/3 of the power of the drawn-out rate (ν), <br><br><I>L</I> ∝ (ν)<sup>-2/3</sup><br><br>The rupture length at the low drawn-out rate strongly depends on the SiO<sub>2</sub> and Fe<sub>2</sub>O<sub>3</sub> contents, but not temperature and drawn-out rate. From these results, it is confirmed that the rupture length at the low drawn-out rate is determined by the Si–O bond strength of the silicate tetrahedral units.

収録刊行物

  • ISIJ international  

    ISIJ international 40(10), 949-953, 2000-10-15 

    The Iron and Steel Institute of Japan

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