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Synthesis of Ti–Al Intermetallic Compound Fine Powder Using Shuttle Reactions of Titanium Ions in the Molten Salt

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Abstract

A novel synthesis method of Ti–Al powder was developed based on the shuttle of disproportionation and proportionation reactions of titanium ions in various molten salts. Fine Ti–Al intermetallic compound powder was successfully synthesized from bulk metals of titanium and aluminum as raw materials. Uniform Ti–Al intermetallic compound powder in the form of TiAl3 was obtained at temperatures lower than 600 °C, while in the form of mixture of TiAl2 and TiAl3 was obtained at temperatures higher than 650 °C. The obtained intermetallic powders in the size of micrometer scale are agglomerated by numerous primary particles with size of several tens of nanometers. The addition of AlCl3 into the reaction solvent does not change the compound phase of the Ti–Al powder but promotes the growth of the primary particles. The phase of the Ti–Al intermetallic compound powders only depends on the reaction temperature in various solvent salts with the different equilibrium constants of disproportionation reaction.

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Acknowledgements

We thank K. Kobayashi for his experimental assistance. Financial support was provided by the Grant-in-Aid for Scientific Research, JSPS KAKENHI grant nos. 20H02492. The authors gratefully acknowledge support from the International Joint Graduate Program in Material Science (GP-MS) at Tohoku University.

Funding

This work was funded by Japan Society for the Promotion of Science (Grant No. 20H02492).

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Authors and Affiliations

  1. Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan

    Terigele Terigele, Shuhan Wang, Jiusan Xiao, Wangwang Ding, Haochen Jiang, Osamu Takeda & Hongmin Zhu

  2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China

    Jiusan Xiao

  3. Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China

    Wangwang Ding

  4. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Xin Lu & Hongmin Zhu

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  1. Terigele Terigele
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  2. Shuhan Wang
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Correspondence to Hongmin Zhu.

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The contributing editor for this article was Adam Clayton Powell.

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Terigele, T., Wang, S., Xiao, J. et al. Synthesis of Ti–Al Intermetallic Compound Fine Powder Using Shuttle Reactions of Titanium Ions in the Molten Salt. J. Sustain. Metall. 10, 267–277 (2024). https://doi.org/10.1007/s40831-024-00791-9

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