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Effect of synthesis...
Effect of synthesis parameters on the structure and properties of carbon particles formed from amorphous fullerites
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- Lukina, I N (författare)
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia
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- Chernogrova, O P (författare)
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia
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- Drozdova, E I (författare)
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia
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- Ekimov, E A (författare)
- Institute for High Pressure Physics, Russian Academy of Sciences, Moscow Troitsk, Russia
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- Apostolova, M O (författare)
- Bauman Moscow State Technical University, Baumanskaya, Moscow, Russia
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- Prokopenko, D A (författare)
- Moscow Aviation Institute (National Research University), Volokolamskoe shosse, Moscow, Russia
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- Soldatov, Alexander V (författare)
- Luleå tekniska universitet,Materialvetenskap,Department of Physics, Harvard University, Cambridge, USA
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- Benavides, V (författare)
- Luleå tekniska universitet,Materialvetenskap
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AA. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia Institute for High Pressure Physics, Russian Academy of Sciences, Moscow Troitsk, Russia (creator_code:org_t)
- Institute of Physics (IOP), 2020
- 2020
- Engelska.
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Serie: IOP Conference Series: Materials Science and Engineering, 1757-8981 1757-899X ; 848
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The effect of high-pressure synthesis temperature on the structure and indentation characteristics of the superelastic hard carbon formed from amorphous fullerites and on the tribological properties of the Co-based composite materials (CM) reinforced by the particles of such carbon has been studied by Raman spectroscopy, high-resolution transmission electron microscopy (HRTEM), indentation measurements, and tribological tests. It is shown that ball milling (for 48 h) of C60 fullerite crystals results in the amorphization of the product of fullerite transformation upon their high-pressure treatment at temperatures above the stability limit of fullerene molecule (~800°C). An increase in synthesis temperature at 8 GPa from 800°C to 1200°C leads to a gradual graphitization of the structure of amorphous fullerite derived carbon. This decreases its hardness and indentation modulus from 32 to 18 GPa and from 256 to 95 GPa, respectively, and increases the elastic recovery (from 80% to 86%). The best tribological characteristics of the CM are attained at the maximum particle hardness, which is realized in the CM synthesized at 800°C. When the synthesis temperature is elevated to 1200°C, the friction coefficient and wear rate of the CM increase, but they remain substantially lower than those of the matrix cobalt.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Experimentell fysik
- Experimental Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)