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首页> 外文期刊>High temperature materials and processes >Study on Structure Characteristics of B_2O_3 and TiO_2-bearing F-Free Mold Flux by Raman Spectroscopy
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Study on Structure Characteristics of B_2O_3 and TiO_2-bearing F-Free Mold Flux by Raman Spectroscopy

机译：用拉曼光谱研究含B_2O_3和TiO_2的无氟铸模通量的结构特征

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摘要

Structure characteristics of fluoride-Free mold flux containing simultaneously B_2O_3 and TiO_2 have been investigated by Raman spectroscopy in this work. Raman spectra for glass samples with different basicities, different contents of TiO_2 and B_2O_3 were recorded during the experiments. According to the experiments results, increase of TiO_2 content leads to the appearance of [TiO_4] and [TiO_6] structure groups, and [TiO_4] becomes the main structure unit in the system. TiO_2 produces a certain destructive effect on Si-O-Si network structure as well as large borate group and conducive to the formation of some other complex structure groups, such as (Si,Ti) coupling in sheet unit. It can be concluded that, with the increase of B_2O_3, the ratio of mixing of the Q~0 structure unit and [TiO_4] structural group decrease and the ratio of sheet structure unit increase, and there forms large borate group. Existence of B_2O_3 increases polymerization degree of the slag system. In addition, increasing basicity causes to the decrease of Q~2 and sheet structure unit and increase of mixing of the Q~0 structure unit and [TiO_4] structural group, and weakening the large borate group. It could be concluded that the increase of basicity reduces the degree of polymerization of the system.
机译：通过拉曼光谱研究了同时含有B_2O_3和TiO_2的无氟防霉剂的结构特征。实验中记录了不同碱度，不同含量的TiO_2和B_2O_3的玻璃样品的拉曼光谱。根据实验结果，TiO_2含量的增加导致[TiO_4]和[TiO_6]结构基团的出现，[TiO_4]成为体系中的主要结构单元。 TiO_2对Si-O-Si网络结构以及较大的硼酸盐基团产生一定的破坏作用，有利于形成其他一些复杂的结构基团，如片状单元中的（Si，Ti）偶联。可以得出结论，随着B_2O_3的增加，Q〜0结构单元与[TiO_4]结构基团的混合比例降低，片状结构单元的比例增加，形成较大的硼酸盐基团。 B_2O_3的存在增加了炉渣系统的聚合度。另外，增加的碱度导致Q〜2和片状结构单元的减少以及Q〜0结构单元和[TiO_4]结构基团的混合的增加，并且削弱了大硼酸盐基团。可以得出结论，碱度的增加降低了体系的聚合度。

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  • 来源
    《High temperature materials and processes》 |2013年第3期|265-273|共9页
  • 作者

    Zhen Wang; Qifeng Shu; Kuochih Chou;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijng 100083, China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijng 100083, China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijng 100083, China;

  • 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);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fluoride-free mold flux; B_2O_3 and TiO_2; structure; raman spectroscopy;

    机译：无氟防霉剂;B_2O_3和TiO_2;结构体;拉曼光谱;

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