Mechanochemical synthesis and structure of metal-carbon composites based on the MAX phases

Rud, A. D.; Lakhnik, A.M.; Kirian, Inna M.; Sizonenko, O. N.; Zaychenko, Andrey D.; Pristash, N. S.; Rud, N.

doi:10.1016/j.matpr.2018.08.034

Cited by 7 publications

(7 citation statements)

References 3 publications

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“…a. The distribution had the shape typical for carbon in amorphous state at the further increase of milling time .…”

Section: Resultsmentioning

confidence: 94%

“…The initial and intermediate stages of decomposition of the molecular crystal C 60 were reported . A further increase of milling time resulted in the destruction of the C 60 molecules (energy input ∼120 kJ g –1 ) and, respectively, the formation of amorphous carbon similar to ball‐milled graphite .…”

Section: Resultsmentioning

confidence: 96%

“…The peaks s 2 and s 3 started to expand after 1 h of milling, and they coalesced into a very broad peak after 3 h processing. The structure factor is characterized by presence of a very broad peak at q = 1.75 Å –1 after 14 h treatment which is typical for amorphous carbon .…”

Section: Resultsmentioning

confidence: 99%

“…Metrical and topological characteristics of VP are calculated for all studied materials. It was shown that the coefficient of sphericity of Voronoi polyhedral, K sph = 36πV 2 /S 3 (V and S are polyhedral volume and area, respectively ), is the most informative parameter of the topological order in disordered materials .…”

Section: Resultsmentioning

confidence: 99%

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Characteristics of local atomic configurations in ball‐milled fullerenes

Rud

Kirian

Ніконова³

et al. 2016

Materialwissenschaft Werkst

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Structural changes occurring in C 60 fullerenes after ball-milling processing were studied. The quantitative characteristics of the local atomic configurations were reconstructed by the reverse Monte Carlo method in the structure of pristine and ball-milled fullerenes C 60 , respectively. It is shown that 3-fold atomic rings, indicating complete amorphization of crystalline fullerenes, are dominant in the structure of material after 14 h treatment. The behavior of the distribution of the sphericity coefficient of Voronoi polyhedra validates a gradual structural disordering of molecular crystal of C 60 and, respectively, the formation of amorphous carbon with randomly arranged closepacked structure after continuous ball-milling treatment.

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“…a. The distribution had the shape typical for carbon in amorphous state at the further increase of milling time .…”

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Characteristics of local atomic configurations in ball‐milled fullerenes

Rud

Kirian

Ніконова³

et al. 2016

Materialwissenschaft Werkst

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“…MAX-phases could be fabricated through a variety of processing techniques: hot isostatic pressing (HIP), slip casting (SC), spark plasma sintering (SPS) [12], hot pressing (HP), self-propagating hightemperature synthesis (SHS), mechanical alloying (MA) [13]. The most promising approach to obtain MAX-phases consists in sequential applying HP method [14,15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ti$_3$AlC$_2$ MAX-Phase with Different Content of B$_2$O$_3$ Additives

Kirian¹,

Voynash²,

Lakhnik³

et al. 2019

Metallofiz. Noveishie Tekhnol.

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The MAX-phase Ti3AlC2 has been fabricated by sintering of the preliminary cold-pressed mixtures of elemental powders of Ti, Al and C with different contents of B2O3 under pressure of 320 and 640 MPa, respectively. Identification and quantification of the phases have been performed by X-ray diffraction. It has been shown when we increase concentration of boron oxide up to 5% wt. in the initial Ti3Al1.1C2 powder mixture cold-pressed at 320 MPa the percentage of the MAX-phase Ti3AlC2 in the pellets after sintering rises up to ∼98.5% wt. It has been found that at the high compacting pressure of 640 MPa, the fraction of the MAX-phase Ti3AlC2 in the sintered pellets also abruptly increases up to ∼98% wt. In this instance the boron oxide amount added to the initial powder mixture before pressing was low as 1% wt. Thus, it has been found that there is a clear relationship between the percentage of boron oxide in the initial powder mixture, pressing pressure and percentage of the MAX-phase after sintering, i.e. the higher compacting pressure the less amount of the boron oxide should be added to the initial powder mixture to achieve high yield of MAX-phase.

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