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Preparation of Spherical Tungsten Particles Assisted by Hydrothermal Method

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Abstract

We presented a strategy to prepare spherical tungsten powder by the combination of hydrothermal method and H2 reduction process. In hydrothermal process, the micelle of tetraethylammonium bromide (TEAB) act as spherical templates for the deposition of tungsten oxide, whereas the excessive TEAB inhibit the formation of spherical tungsten oxide due to the dense molecular layer of TEAB on the tungsten oxide particles. Citric acid (CA) can control the formation rate and structure of the tungsten oxide when its concentration is more than 0.2 mol/L, because of its ability to coordinate with tungsten atoms. The synergistic effect of TEAB and CA facilitates the formation of spherical tungsten oxide with nanorod crown. After being treated by H2 at 600 and 650 °C, the tungsten oxide particles are reduced to tungsten particles, which maintain the spherical structure of tungsten oxide and have porous structure.

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Authors and Affiliations

  1. Ganzhou Nonferrous Metallurgy Research Institute Co., Ltd, Ganzhou, 341000, China

    Jiawang Guo  (郭家旺), Xiaoqiang Wen, Ying Wu, Jianbing Xu & Jieying Zhou

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  1. Jiawang Guo  (郭家旺)
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  2. Xiaoqiang Wen
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  3. Ying Wu
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  4. Jianbing Xu
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  5. Jieying Zhou
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Correspondence to Jiawang Guo  (郭家旺).

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All authors declare that there are no competing interests.

Additional information

Funded by the Key Program of Jiangxi Province on Development and Research(No.20203BBE53058), and the Key Program of Ganzhou City on Development and Research (No.202101125003)

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Guo, J., Wen, X., Wu, Y. et al. Preparation of Spherical Tungsten Particles Assisted by Hydrothermal Method. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 38, 1457–1462 (2023). https://doi.org/10.1007/s11595-023-2842-x

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  • DOI: https://doi.org/10.1007/s11595-023-2842-x

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