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Thermal Explosion in Ti + Zr + Hf + Nb + Ta + 5С System: Effect of Mechanical Activation

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Abstract

The effect of various conditions of mechanical activation of Ti + Zr + Hf + Nb + Ta + 5C mixtures on the microstructure of composite particles, regularities of their ignition, and phase composition of final products was studied. The activation of mixtures was found to decrease the ignition temperature by 600–900°C. It was shown that the intense mechanical activation reduces the activity of the mixture and the subsequent ignition in the thermal explosion mode transforms the mixture into high-entropy compound. Such transformation is not observed in conditions of long-term low-intensity activation.

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Funding

The research was supported by the Russian Science Foundation (project no. 20-13-00277).

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Authors and Affiliations

  1. Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, 142432, Chernogolovka, Russia

    S. G. Vadchenko, I. D. Kovalev, N. I. Mukhina & A. S. Rogachev

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

    A. S. Sedegov

Authors
  1. S. G. Vadchenko
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  2. I. D. Kovalev
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  3. N. I. Mukhina
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  4. A. S. Sedegov
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  5. A. S. Rogachev
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Corresponding author

Correspondence to S. G. Vadchenko.

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The authors declare that they have no conflicts of interest.

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Translated by O. Golosova

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Vadchenko, S.G., Kovalev, I.D., Mukhina, N.I. et al. Thermal Explosion in Ti + Zr + Hf + Nb + Ta + 5С System: Effect of Mechanical Activation. Int. J Self-Propag. High-Temp. Synth. 31, 208–214 (2022). https://doi.org/10.3103/S1061386222040136

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  • DOI: https://doi.org/10.3103/S1061386222040136

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