The mechanical response of glassy carbon recovered from high pressure

X. Huang; T. B. Shiell; C. De Tomas; I. Suarez-Martinez; S. Wong; S. Mann; D. R. Mckenzie; N. A. Marks; D. G. Mcculloch; J. E. Bradby

doi:10.1063/1.5142309

The mechanical response of glassy carbon recovered from high pressure

X. Huang^*, T. B. Shiell, C. De Tomas, I. Suarez-Martinez, S. Wong, S. Mann, D. R. Mckenzie, N. A. Marks, D. G. Mcculloch, J. E. Bradby

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Glassy carbon (GC) is usually considered the prototypical super-elastic material, which can almost fully recover its shape after compression of several gigapascals (GPa). In this work, nanoindentation is used to study the mechanical response of GC, which was subjected to a range of high pressures using a diamond anvil cell (DAC). We show that GC starts to lose its elasticity after compression to 6 GPa and becomes clearly mechanically anisotropic after being compressed beyond ∼30 GPa. Molecular dynamics (MD) simulations are used to calculate Young's modulus before and after compression. Through our experimental results and MD simulations, we show that the elasticity of GC is at a minimum around 30 GPa but recovers after compression to higher pressures along the DAC compression axis.

Original language	English
Article number	145105
Journal	Journal of Applied Physics
Volume	127
Issue number	14
DOIs	https://doi.org/10.1063/1.5142309
Publication status	Published - 14 Apr 2020

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abstract = "Glassy carbon (GC) is usually considered the prototypical super-elastic material, which can almost fully recover its shape after compression of several gigapascals (GPa). In this work, nanoindentation is used to study the mechanical response of GC, which was subjected to a range of high pressures using a diamond anvil cell (DAC). We show that GC starts to lose its elasticity after compression to 6 GPa and becomes clearly mechanically anisotropic after being compressed beyond ∼30 GPa. Molecular dynamics (MD) simulations are used to calculate Young's modulus before and after compression. Through our experimental results and MD simulations, we show that the elasticity of GC is at a minimum around 30 GPa but recovers after compression to higher pressures along the DAC compression axis.",

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AU - Huang, X.

AU - Shiell, T. B.

AU - De Tomas, C.

AU - Suarez-Martinez, I.

AU - Wong, S.

AU - Mann, S.

AU - Mckenzie, D. R.

AU - Marks, N. A.

AU - Mcculloch, D. G.

AU - Bradby, J. E.

PY - 2020/4/14

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AB - Glassy carbon (GC) is usually considered the prototypical super-elastic material, which can almost fully recover its shape after compression of several gigapascals (GPa). In this work, nanoindentation is used to study the mechanical response of GC, which was subjected to a range of high pressures using a diamond anvil cell (DAC). We show that GC starts to lose its elasticity after compression to 6 GPa and becomes clearly mechanically anisotropic after being compressed beyond ∼30 GPa. Molecular dynamics (MD) simulations are used to calculate Young's modulus before and after compression. Through our experimental results and MD simulations, we show that the elasticity of GC is at a minimum around 30 GPa but recovers after compression to higher pressures along the DAC compression axis.

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The mechanical response of glassy carbon recovered from high pressure

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