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Preparation of amorphous nano-boron powder with high activity by combustion synthesis

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Abstract

The preparation process of amorphous nanometer boron powders through combustion synthesis was investigated, and the effects of the reactant ratio, the heating agent and the milling rate on the activity and particle size of amorphous boron powders were studied. The results show that the boron powders exist in the form of an amorphous phase which has the crystallinity lower than 30.4%, and the particle size of boron powder decreases with an increase of the high-energy ball milling rate. The purity of amorphous boron powder is 94.8% and particle sizes are much smaller than 100 nm when the mass ratio of B2O3/Mg/KClO3 is 100:105:17 and the ball milling time is 20 min with the milling rate of 300 r/min. At the same time, the amorphous boron nano-fibers appear in the boron powders.

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Authors and Affiliations

  1. Key Laboratory for Ecological Metallurgy of Multi-metallic Mineral of Ministry of Education, Northeastern University, Shenyang, 110819, China

    Zhi-he Dou  (豆志河), Ting-an Zhang  (张廷安), Ji-cheng He  (赫冀成) & Yang Huang  (黄杨)

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  1. Zhi-he Dou  (豆志河)
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  2. Ting-an Zhang  (张廷安)
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  3. Ji-cheng He  (赫冀成)
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  4. Yang Huang  (黄杨)
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Correspondence to Ting-an Zhang  (张廷安).

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Foundation item: Project(51002025) supported by the National Natural Science Foundation of China

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Dou, Zh., Zhang, Ta., He, Jc. et al. Preparation of amorphous nano-boron powder with high activity by combustion synthesis. J. Cent. South Univ. 21, 900–903 (2014). https://doi.org/10.1007/s11771-014-2016-2

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  • DOI: https://doi.org/10.1007/s11771-014-2016-2

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