Combustion Characteristics and Structure of Carbon Nanotube/Titanium Composites Full article
Journal |
Journal of Thermal Analysis and Calorimetry
ISSN: 1388-6150 , E-ISSN: 1572-8943 |
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Output data | Year: 2019, Volume: 137, Number: 6, Pages: 1903-1910 Pages count : 8 DOI: 10.1007/s10973-019-08109-8 | ||||||||||||||
Tags | Ball milling, Multi-walled carbon nanotubes, Thermal explosion, Titanium, Titanium carbide | ||||||||||||||
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Affiliations |
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Funding (1)
1 | Federal Agency for Scientific Organizations | 0301-2016-0021 (АААА-А17-117030310277-6) |
Abstract:
Reactivity of nanosized objects is a hot topic in modern solid-state chemistry and materials science. The present work is focused on the interaction between multi-walled carbon nanotubes (MWCNTs) and metallic titanium during high-energy ball milling and thermal explosion, a rapid temperature rise in a mixture caused by an exothermic reaction ignited by external heating and occurring throughout the sample volume. A fundamental property of the nanocomposite mixture—the ability of its components to react in the combustion mode—is explained; an analysis of the dependence of the combustion characteristics of the nanocomposites on the milling duration of powder mixtures is provided. The phase and structural transformations of the Ti-MWCNT mixtures have been analyzed using X-ray diffraction and transmission electron microscopy. It was found that the ball-milled powders contain nanostructured titanium, nanotube fragments, amorphous carbon and nanosized carbon-deficient titanium carbide TiCx. Within the nanocomposite powder particles, TiCx nanoparticles are covered with layers of amorphous carbon. Thermal explosion was observed in Ti-4mass%MWCNT mixtures milled for 1.5–7 min. Shorter milling times were apparently not sufficient for establishing a proper interfacial contact, while longer milling times led to the extensive formation of titanium carbide TiCx, which acted as a barrier lowering the heat release by the mixture upon ignition. Both the ignition temperature of Ti-4mass%MWCNT and the maximum temperature developed during thermal explosion decrease with the milling time. A comparison of the behavior of MWCNT with that of carbon black under conditions of thermal explosion in the mixtures with titanium is also presented.
Cite:
Korchagin M.A.
, Gabdrashova S.E.
, Dudina D.V.
, Bokhonov B.B.
, Bulina N.V.
, Kuznetsov V.L.
, Ishchenko A.V.
Combustion Characteristics and Structure of Carbon Nanotube/Titanium Composites
Journal of Thermal Analysis and Calorimetry. 2019. V.137. N6. P.1903-1910. DOI: 10.1007/s10973-019-08109-8 WOS Scopus РИНЦ AN OpenAlex
Combustion Characteristics and Structure of Carbon Nanotube/Titanium Composites
Journal of Thermal Analysis and Calorimetry. 2019. V.137. N6. P.1903-1910. DOI: 10.1007/s10973-019-08109-8 WOS Scopus РИНЦ AN OpenAlex
Dates:
Submitted: | Jul 27, 2018 |
Accepted: | Feb 15, 2019 |
Published online: | Mar 2, 2019 |
Published print: | Sep 1, 2019 |
Identifiers:
Web of science: | WOS:000481773000007 |
Scopus: | 2-s2.0-85062726343 |
Elibrary: | 38689008 |
Chemical Abstracts: | 2019:671612 |
OpenAlex: | W2920653024 |