Graphite to diamond-like carbon phase transformation by high-pressure torsion

Kaveh Edalati, Takeshi Daio, Yoshifumi Ikoma, Makoto Arita, Zenji Horita

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Diamond-like carbon (DLC) with significant fraction of tetrahedral sp 3 bonds and amorphous structure is generally produced in the form of thin films by rapid cooling of high-energy carbon atoms in vacuum. This study shows that DLC can be directly formed from bulk samples of graphite by application of severe plastic deformation under high pressures. The formation of DLC is enhanced with increasing the shear strain, pressure, and temperature. It is suggested that the high pressure thermodynamically stabilize DLC and formation of high density of lattice defects by straining reduces the energy barrier for DLC formation.

Original languageEnglish
Article number034108
JournalApplied Physics Letters
Volume103
Issue number3
DOIs
Publication statusPublished - Jul 15 2013

Fingerprint

torsion
phase transformations
graphite
diamonds
carbon
shear strain
plastic deformation
cooling
vacuum
energy
defects
thin films
atoms
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Graphite to diamond-like carbon phase transformation by high-pressure torsion. / Edalati, Kaveh; Daio, Takeshi; Ikoma, Yoshifumi; Arita, Makoto; Horita, Zenji.

In: Applied Physics Letters, Vol. 103, No. 3, 034108, 15.07.2013.

Research output: Contribution to journalArticle

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