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Raman Spectroscopy on the KBF4–KF–KCl Molten Salt System

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Characterization of Minerals, Metals, and Materials 2019

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

KBF4–KF–KCl is an important subsystem of KBF4–K2TiF6–KF–KCl molten salt system which is used as the electrolyte to electrodeposit TiB2. In the present study, Raman spectroscopy was used to study the ionic structure of the KBF4–KF–KCl system, in which the molar fraction of KBF4 was 0.3–0.9 and KF and KCl were added with the equimolar molar fraction. Two complexes, namely, BF63− and \( {\text{BF}}^{ - }_{{4}} \) were found in the melts. The addition of KCl to the KF–KBF4 system only had a dilution effect in the melts. Moreover, the addition of Cl− caused a reduction in the relative concentration of F− in the system so that the ion balance between BF63− and \( {\text{BF}}_{{4}}^{ - } \) moved in the direction of \( {\text{BF}}_{{4}}^{ - } \).

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Acknowledgements

The authors would like to acknowledge the financial support by the National Natural Science Foundation of China (No. 51474060), the National Key R & D Program of China (No. 2017 YFC0805100) and the Fundamental Research Funds for the Central Universities of China (No. N150204010 and N162502002).

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Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, 110004, People’s Republic of China

    Xianwei Hu, Bo Li, Jiangyu Yu, Zhongning Shi, Bingliang Gao & Zhaowen Wang

Authors
  1. Xianwei Hu
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  2. Bo Li
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  3. Jiangyu Yu
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  4. Zhongning Shi
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  5. Bingliang Gao
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  6. Zhaowen Wang
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Corresponding author

Correspondence to Xianwei Hu .

Editor information

Editors and Affiliations

  1. Michigan Technological University, Houghton, MI, USA

    Bowen Li

  2. CanmetMATERIALS, Hamilton, ON, Canada

    Jian Li

  3. Al-Isra University, Amman, Jordan

    Shadia Ikhmayies

  4. ArcelorMittal Global R&D, East Chicago, IN, USA

    Mingming Zhang

  5. Middle East Technical University, Ankara, Turkey

    Yunus Eren Kalay

  6. Los Alamos National Laboratory, Los Alamos, NM, USA

    John S. Carpenter

  7. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  8. Military Institute of Engineering, Rio de Janeiro, Brazil

    Sergio Neves Monteiro

  9. Chongqing University, Chongqing, China

    Chenguang Bai

  10. UNSW Canberra, Campbell, ACT, Australia

    Juan P. Escobedo-Diaz

  11. Free University of Bozen-Bolzano, Bolzano, Italy

    Pasquale Russo Spena

  12. Naval Research Laboratory, Washington, DC, USA

    Ramasis Goswami

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© 2019 The Minerals, Metals & Materials Society

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Hu, X., Li, B., Yu, J., Shi, Z., Gao, B., Wang, Z. (2019). Raman Spectroscopy on the KBF4–KF–KCl Molten Salt System. In: Li, B., et al. Characterization of Minerals, Metals, and Materials 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05749-7_37

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