Effect of Nanoparticle Size on the Mechanical Strength of Ni–Graphene Composites

Autor:	Karina A. Krylova, Liliya R. Safina, Ramil T. Murzaev, Julia A. Baimova, Radik R. Mulyukov
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	crumpled graphene Ni–graphene composite molecular dynamics mechanical properties Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 14, Iss 11, p 3087 (2021)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma14113087
Popis:	The effect of the size of nickel nanoparticles on the fabrication of a Ni–graphene composite by hydrostatic pressure at 0 K followed by annealing at 1000 and 2000 K is studied by molecular dynamics simulation. Crumpled graphene, consisting of crumpled graphene flakes interconnected by van der Waals forces is chosen as the matrix for the composite and filled with nickel nanoparticles composed of 21 and 47 atoms. It is found that the main factors that affect composite fabrication are nanoparticle size, the orientation of the structural units, and temperature of the fabrication process. The best stress–strain behavior is achieved for the Ni/graphene composite with Ni47 nanoparticle after annealing at 2000 K. However, all of the composites obtained had strength property anisotropy due to the inhomogeneous distribution of pores in the material volume.
Databáze:	Directory of Open Access Journals
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