Nonequilibrium Diamond Growth during the High-Temperature High-Pressure Synthesis of a Composite Material Made of a Mixture of Cobalt and Fullerene Powders
- Authors: Bulienkov N.A.1, Zheligovskaya E.A.1, Chernogorova O.P.2, Drozdova E.I.2, Ushakova I.N.2, Ekimov E.A.3
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Baikov Institute of Metallurgy and Materials Science
- Vereshchagin Institute of High-Pressure Physics
- Issue: Vol 2018, No 1 (2018)
- Pages: 35-41
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172184
- DOI: https://doi.org/10.1134/S0036029518010032
- ID: 172184
Cite item
Abstract
A composite material (CM) reinforced by diamond particles is fabricated from a mixture of cobalt and 10 wt % C60 powders at a pressure of 8 GPa and a temperature of 1200–1300°C, which is close to the melting temperature of the metastable Co–C eutectic. The results of X-ray diffraction, Raman spectroscopy, and electron-probe microanalysis demonstrate that the CM consists of diamond and the Co3C carbide. Diamond crystals are shown to grow as plates parallel to a {100} plane according to the mechanism of nonequilibrium normal growth during liquid-phase CM synthesis. The diamond particles have a hardness of 82 GPa at an elastic recovery of 95%. The structure of the synthesized cobalt-based CM with diamond inclusions ensures its ultrahigh wear resistance and antifriction properties.
Keywords
About the authors
N. A. Bulienkov
Frumkin Institute of Physical Chemistry and Electrochemistry
Author for correspondence.
Email: lmm@phyche.ac.ru
Russian Federation, Leninskii pr. 31, Moscow, 199071
E. A. Zheligovskaya
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: lmm@phyche.ac.ru
Russian Federation, Leninskii pr. 31, Moscow, 199071
O. P. Chernogorova
Baikov Institute of Metallurgy and Materials Science
Email: lmm@phyche.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
E. I. Drozdova
Baikov Institute of Metallurgy and Materials Science
Email: lmm@phyche.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
I. N. Ushakova
Baikov Institute of Metallurgy and Materials Science
Email: lmm@phyche.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
E. A. Ekimov
Vereshchagin Institute of High-Pressure Physics
Email: lmm@phyche.ac.ru
Russian Federation, Moscow, 142190