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RESEARCH AND MATHEMATICAL MODELING OF THE PROCESS OF OBTAINING A NANOCOMPOSITE OF SIC-CNT

Anna Shaneva

First published: 2018-06-20https://doi.org/10.5593/sgem2018/6.1/s24.057View metrics

Abstract

The reinforcement of ceramic composites with the help of carbon nanotubes (CNTs) is used to increase and stabilize the mechanical properties of composites based on silicon carbide, such as strength, fracture toughness and modulus of elasticity. To save the properties and reduce the synthesis temperature of ceramics based on silicon carbide, an aluminum-magnesian spinel is introduced into the matrix. A nanocomposite with a matrix of silicon carbide (SiC) and spinel (MgAl2O4) and with a CNT content of 1-3% by weight was synthesized by the method of spark plasma sintering (SPS).Based on the results of studies of the properties of the obtained samples of a ceramic SiC-CNT composite, it can be noted that the porosity depends on the amount of CNTs and the holding time. The constructed mathematical model describes the change in porosity during the process of plasma plasma sintering of the composite. The mathematical model contains kinetic constants that take into account the influence of the physical parameters of the various stages of sintering. This mathematical model makes it possible to perform numerical experiments to determine the optimum temperature regime of sintering. The research is supported by the Ministry of Education and Science of the Russian Federation, agreement 14.574.21.0158, project ID RFMEFI57417X0158.

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Publication details

Title
RESEARCH AND MATHEMATICAL MODELING OF THE PROCESS OF OBTAINING A NANOCOMPOSITE OF SIC-CNT
Authors
Anna Shaneva
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Nano, Bio and Green - Technologies for a Sustainable Future
Publisher
STEF92 Technology
Year
2018
Pages
425-432
SWS Citekey
Shaneva201824425432
ISSN
1314-2704
ISBN
978-619-7408-50-8
Language
en
Publication type
Conference Paper
Keywords
Compositesilicon carbidecarbon nanotubesmathematical modelingspark plasma sintering
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