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Nanomaterials 2019, 9(4), 550; https://doi.org/10.3390/nano9040550

Conditions for Production of Composite Material Based on Aluminum and Carbon Nanofibers and Its Physic-Mechanical Properties

1
Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
2
Saint Petersburg State University, Universitetskii pr.26, 198504 St. Petersburg, Russia
*
Author to whom correspondence should be addressed.
Received: 2 February 2019 / Revised: 22 March 2019 / Accepted: 23 March 2019 / Published: 4 April 2019
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Abstract

Aluminum-based metallic matrix composites reinforced by carbon nanofibers (CNFs) are important precursors for development of new light and ultralight materials with enhanced properties and high specific characteristics. In the present work, powder metallurgy technique was applied for production of composites based on reinforcement of aluminum matrices by CNFs of different concentrations (0~2.5 wt%). CNFs were produced by chemical vapor deposition (CVD) and mechanical activation. We determined that in situ synthesis of carbon nanostructures with subsequent mechanic activation provides satisfactory distribution of nanofibers and homogeneous composite microstructure. Introduction of 1 vol% of flux (0.25 NaCl + 0.25 KCl + 0.5 CaF2) during mechanic activation helps to reduce the strength of the contacts between the particles. Additionally, better reinforcement of alumina particles and strengthening the bond between CNFs and aluminum are observed due to alumina film removal. Introduction of pure aluminum into mechanically alloyed powder provides the possibility to control composite durability, plasticity and thermal conductivity. View Full-Text
Keywords: Al-CNF composite; in situ synthesis of CNF; mechanic activation; carbon nanofibers; durability; plasticity; thermal conductivity Al-CNF composite; in situ synthesis of CNF; mechanic activation; carbon nanofibers; durability; plasticity; thermal conductivity
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Tolochko, O.V.; Koltsova, T.S.; Bobrynina, E.V.; Rudskoy, A.I.; Zemtsova, E.G.; Kirichenko, S.O.; Smirnov, V.M. Conditions for Production of Composite Material Based on Aluminum and Carbon Nanofibers and Its Physic-Mechanical Properties. Nanomaterials 2019, 9, 550.

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