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Metal-Doped MgB2 by Thermal Explosion: A TRXRD Study

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Abstract

The work aimed at preparation of the MgB2 doped with alloying metals (Al, Cu, Ag, Zn) by SHS in a mode of thermal explosion. The measured combustion temperatures fell within the range 940–1030°С. Detailed XRD analysis has shown that, among other selected metals, it is solely Al that can enter the MgB2 lattice. According to time-resolved XRD results, the formation of final product (Mg, Al)B2 in the Mg–Al–B system involved no intermediate phases. But in the Mg–Cu–B system, the volume reaction additionally yielded MgB4, Cu2Mg, and CuMg2 due to the presence of the liquid phase. In final products, the agglomerates of MgB2 grains had a size of 500–1000 nm, while the size of Cu2Mg and CuMg2 inclusions was within 0.5–2 μm.

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Authors and Affiliations

  1. National University of Science and Technology MISiS, Moscow, 119049, Russia

    A. Yu. Potanin & Yu. S. Pogozhev

  2. Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moscow, 142432, Russia

    D. Yu. Kovalev & N. Yu. Khomenko

Authors
  1. A. Yu. Potanin
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  2. D. Yu. Kovalev
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  3. Yu. S. Pogozhev
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  4. N. Yu. Khomenko
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Correspondence to A. Yu. Potanin.

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Potanin, A.Y., Kovalev, D.Y., Pogozhev, Y.S. et al. Metal-Doped MgB2 by Thermal Explosion: A TRXRD Study. Int. J Self-Propag. High-Temp. Synth. 27, 18–25 (2018). https://doi.org/10.3103/S1061386218010065

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  • DOI: https://doi.org/10.3103/S1061386218010065

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