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Article Dans Une Revue Journal of the European Ceramic Society Année : 2020

Combustion synthesis of TiC-based ceramic-metal composites with high entropy alloy binder

A.S. Rogachev
  • Fonction : Auteur
S.G. Vadchenko
  • Fonction : Auteur
N.A. Kochetov
  • Fonction : Auteur
D. Yu. Kovalev
  • Fonction : Auteur
I.D. Kovalev
  • Fonction : Auteur
A.S. Shchukin
  • Fonction : Auteur
A.N. Gryadunov
  • Fonction : Auteur

Résumé

Ceramic-metal composites TiC-High-Entropy Alloy (HEA) CoCrFeNiMe (Me = Mn, Ti or Al) were first produced by combustion synthesis method. Self-sustained synthesis occurs due to heat release from exothermic reaction Ti + C = TiC; the binder content was varied between zero and 40-50 wt.%. The combustion velocity and temperature gradually decreased with increasing binder content. Resultant materials consist of TiC grains and two-phase (fcc and bcc) binder. Vickers microhardness (100 g) of compacted cermet materials with 30 wt.% of binder was in the range of 10-17 GPa and increased with increasing bcc to fcc ratio. Based on experimental results and thermodynamic calculations, the mechanism of microstructure formation in TiC-HEA cermets was suggested.
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Dates et versions

hal-02381366 , version 1 (10-11-2020)

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Citer

A.S. Rogachev, S.G. Vadchenko, N.A. Kochetov, D. Yu. Kovalev, I.D. Kovalev, et al.. Combustion synthesis of TiC-based ceramic-metal composites with high entropy alloy binder. Journal of the European Ceramic Society, 2020, ⟨10.1016/j.jeurceramsoc.2019.11.059⟩. ⟨hal-02381366⟩
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