Machine learning-driven synthesis of TiZrNbHfTaC5 high-entropy carbide.

Autor:	Pak, Alexander Ya., Sotskov, Vadim, Gumovskaya, Arina A., Vassilyeva, Yuliya Z., Bolatova, Zhanar S., Kvashnina, Yulia A., Mamontov, Gennady Ya., Shapeev, Alexander V., Kvashnin, Alexander G.
Předmět:	ELECTRIC discharges PLASMA arcs MACHINE learning CARBIDES HIGH temperatures ELECTRIC arc NIOBIUM compounds
Zdroj:	NPJ Computational Materials; 1/13/2023, Vol. 9 Issue 1, p1-11, 11p
Abstrakt:	Synthesis of high-entropy carbides (HEC) requires high temperatures that can be provided by electric arc plasma method. However, the formation temperature of a single-phase sample remains unknown. Moreover, under some temperatures multi-phase structures can emerge. In this work, we developed an approach for a controllable synthesis of HEC TiZrNbHfTaC5 based on theoretical and experimental techniques. We used Canonical Monte Carlo (CMC) simulations with the machine learning interatomic potentials to determine the temperature conditions for the formation of single-phase and multi-phase samples. In full agreement with the theory, the single-phase sample, produced with electric arc discharge, was observed at 2000 K. Below 1200 K, the sample decomposed into (Ti-Nb-Ta)C, and a mixture of (Zr-Hf-Ta)C, (Zr-Nb-Hf)C, (Zr-Nb)C, and (Zr-Ta)C. Our results demonstrate the conditions for the formation of HEC and we anticipate that our approach can pave the way towards targeted synthesis of multicomponent materials. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink