STRUCTURAL-PHASE STATES OF THE MULTICOMPONENT ALLOY NANOPARTICLES CoMoFeNiCu PRODUCE BY OF JOINT EXPLODING WIRES

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Abstract

Using method of the joint electric explosion of wires of various metals/alloys, for the first time nanoparticles were obtained of a multicomponent alloy with high activity in the ammonia decomposition reaction. It is shown that the obtained samples are represented by spherical particles with an average size of about 40 nm. The crystal structure of nanoparticles contains fcc, bcc phases, as well as a phase corresponding to an intermetallic compound. Energy dispersive analysis data show that in the obtained samples two types of copper segregation in the of particles are observed: enrichment in the central region of the particles and segregation on the surface with formation of a structure characteristic of «Janus» particles. The data obtained indicate the need to involve atomistic modeling methods in the search for optimal quantitative compositions of nanoparticles of multicomponent alloys to provide the necessary desirable structure and functional properties. The prospects for applying atomistic simulation to high-entropy alloys are noted.

About the authors

Konstantin V. Suliz

Institute of Strength Physics and Materials Science of Siberian Branch of RAS

Email: konstantin.suliz@gmail.com
Tomsk, Russia

Nickolay Yu. Sdobnyakov

Tver State University

Tver, Russia

Alexander V. Pervikov

Institute of Strength Physics and Materials Science of Siberian Branch of RAS

Email: pervikov@list.RUS
Tomsk, Russia

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