The features of NiCx (x ⩽ 0.33) phase formation at the mechanochemical alloying of Ni-CNT and Ni-graphite mixtures

Nakonechna, O.; Belyavina, N. N.; Ivanenko, K.; Kuryliuk, A. N.; Dusheiko, Mykhailo; Макара, В. А.

doi:10.15407/dopovidi2020.03.047

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Generally, the microhardness of the HT-HP sintered nickel carbide s likely to be affected by the crystal structure features. Thus, as we showed previously [21,22], the crystal structure of Ni3C carbide obtained from a Features of cubic Ni3C and NiC carbides obtained by HT-HP sintering towards the centers of its octahedral voids. These two types of characteristic arrangement of Carbon atoms in mechanically alloyed nickel carbide (Fig.…”

Section: Resultssupporting

confidence: 65%

“…We have also shown that the existence region of this cubic nickel carbide expands at least to the NiC equiatomic composition, undergoing certain structural transformations [22,23].…”

Section: Features Of Cubic Ni3c and Nic Carbides Obtained By Ht-hp Si...mentioning

confidence: 72%

“…Mechanically alloyed NiC powders obtained from Ni-C charge of (3:1) and (1:1) compositions [22,23] were sintered by high temperature -high-pressure (HP-HT) technique. The toroid-type high pressure apparatus was applied to create the pressure of 7.7 GPa and temperature of 1500-2200 °C (the powder wrapped into the AlN foil was heated in a high pressure cell for 40 s).…”

Section: Methodsmentioning

confidence: 99%

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Features of cubic Ni3C and NiC carbides obtained by HT-HP sintering

Nakonechna

Stratiіchuk

Kuryliuk

et al. 2022

Phys. Chem. Solid St.

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In this work NiC carbides were manufactured by HP-HT sintering of mechanically alloyed charges of the elemental Ni–carbon nanotubes (CNT) or Ni–Graphite. Structural features of the materials obtained were characterized by X-ray diffraction and scanning electron microscopy. X-ray diffraction studies have revealed that the crystal lattice of nickel carbide obtained from mechanically alloyed Ni–CNT charge is supplemented with additional Carbon atoms from the graphite shell of the high-pressure cell at HT-HP sintering. On the other hand, nickel carbide fabricated from mechanically alloyed Ni–Graphite charge retains its composition. It is shown that materials studied in this work demonstrate an advanced value of microhardness (up to 7 GPa).

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