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Effect of synthesis...
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Lukina, I NA.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia
(författare)
Effect of synthesis parameters on the structure and properties of carbon particles formed from amorphous fullerites
- Artikel/kapitelEngelska2020
Förlag, utgivningsår, omfång ...
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Institute of Physics (IOP),2020
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:ltu-80267
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https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80267URI
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https://doi.org/10.1088/1757-899X/848/1/012050DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
Serie
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IOP Conference Series: Materials Science and Engineering,1757-89811757-899X ;848
Anmärkningar
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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 och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Chernogrova, O PA.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia
(författare)
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Drozdova, E IA.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, Russia
(författare)
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Ekimov, E AInstitute for High Pressure Physics, Russian Academy of Sciences, Moscow Troitsk, Russia
(författare)
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Apostolova, M OBauman Moscow State Technical University, Baumanskaya, Moscow, Russia
(författare)
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Prokopenko, D AMoscow Aviation Institute (National Research University), Volokolamskoe shosse, Moscow, Russia
(författare)
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Soldatov, Alexander VLuleå tekniska universitet,Materialvetenskap,Department of Physics, Harvard University, Cambridge, USA(Swepub:ltu)also
(författare)
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Benavides, VLuleå tekniska universitet,Materialvetenskap(Swepub:ltu)vicben
(författare)
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A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr, Moscow, RussiaInstitute for High Pressure Physics, Russian Academy of Sciences, Moscow Troitsk, Russia
(creator_code:org_t)
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