Superhard phase composed of single-wall carbon nanotubes

We report experimental data on irreversible changes of mechanical and structure properties of SWNT under pressure

M. Popov

2002

Scholarcy highlights

  • Single-wall carbon nanotubes have been studied under pressure up to 55 GPa
  • We report experimental data on irreversible changes of mechanical and structure properties of SWNT under pressure
  • The new superhard phase composed of single-wall carbon nanotubes has been studied which exhibits a bulk modulus exceeding or comparable with diamond and hardness belongs to the range between cubic BN and diamond
  • The SP-SWNT were synthesized by applying a shear deformation under load in a diamond-anvil cell; the procedure of stress tensor variation
  • Single-wall carbon nanotubes are transformed to SP-SWNT at pressure of 24 GPa
  • The transformation is accompanied by irreversible changes in the Raman spectra
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