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Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies pp 365–372Cite as

Effect of Flux Ratio on the Products of Self Propagating High Temperature Synthesis-Casting in the WO3–Si–Al System

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Abstract

The influence of flux CaO2–Al ratio on the Self propagating high temperature synthesis (SHS)-casting reaction products in WO3–Si–Al system has been investigated in this study. Incorporation of CaO2–Al amounting to 1–5 wt% of total charge has been found to be adequate to form WSi2 intermetallic with a maximum hard-W5Si3 secondary phase. The micro-hardness of tungsten silicides intermetallic product increased significantly with CaO2–Al ratio. The as-SHS-casting products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM) with energy dispersive x-ray (EDX) technique.

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Acknowledgements

This work has been carried out with the support from Prince of Songkla University Research Fund (Funding No. ENG-550115S) and the Ceramic and Composite Materials Engineering Research Group (CMERG), Materials Engineering Research Center (MERC), Faculty of Engineering, Prince of Songkla University (PSU), Thailand.

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Authors and Affiliations

  1. Faculty of Engineering, Department of Mechanical Engineering, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand

    S. Niyomwas

  2. Faculty of Science, Department of Materials Science and Technology, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand

    T. Chanadee

Authors
  1. S. Niyomwas
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  2. T. Chanadee
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Corresponding author

Correspondence to S. Niyomwas .

Editor information

Editors and Affiliations

  1. Rio Tinto Kennecott Utah Copper , Magna, Utah, USA

    Shijie Wang

  2. University of Utah , Salt Lake City, Utah, USA

    Michael L Free

  3. The University of Saskatchewan , Saskatoon, Saskatchewan, Canada

    Shafiq Alam

  4. ArcelorMittal Global R&D , Schereville, Indiana, USA

    Mingming Zhang

  5. Colorado School of Mines, George S. Ansell Chair Colorado School of Mines, Golden, Colorado, USA

    Patrick R. Taylor

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© 2017 The Minerals, Metals & Materials Society

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Niyomwas, S., Chanadee, T. (2017). Effect of Flux Ratio on the Products of Self Propagating High Temperature Synthesis-Casting in the WO3–Si–Al System. In: Wang, S., Free, M., Alam, S., Zhang, M., Taylor, P. (eds) Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51091-0_35

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