Comparison of hydrostatic and non-hydrostatic compression of glassy carbon to 80 GPa

Xingshuo Huang; Thomas B. Shiell; Alan Salek; Alireza Aghajamali; Irene Suarez-Martinez; Qingbo Sun; Timothy A. Strobel; David R. McKenzie; Nigel A. Marks; Dougal G. McCulloch; Jodie E. Bradby

doi:10.1016/j.carbon.2023.118763

Comparison of hydrostatic and non-hydrostatic compression of glassy carbon to 80 GPa

Xingshuo Huang^*, Thomas B. Shiell, Alan Salek, Alireza Aghajamali, Irene Suarez-Martinez, Qingbo Sun, Timothy A. Strobel, David R. McKenzie, Nigel A. Marks, Dougal G. McCulloch, Jodie E. Bradby

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Understanding new mechanisms for phase transformation in carbon is of considerable interest. This study investigates on the compression conditions required to create recoverable diamond during room-temperature high-pressure compression of glassy carbon. Under non-hydrostatic compression conditions when shear is present, glassy carbon transforms into an oriented graphitic structure at ∼45 GPa, and then forms mixed diamond and lonsdaleite nanocrystals when the pressure is higher than ∼80 GPa. In contrast, during hydrostatic compression no significant changes in the microstructure was observed, highlighting glassy carbon's resilience under compression. Molecular dynamics modelling supports the proposed model that shear drives the phase transition mechanism and causes a temperature spike that drives crystallisation. Our work demonstrates that shear is key to high-pressure diamond formation in the absence of heating.

Original language	English
Article number	118763
Journal	Carbon
Volume	219
DOIs	https://doi.org/10.1016/j.carbon.2023.118763
Publication status	Published - 10 Feb 2024

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title = "Comparison of hydrostatic and non-hydrostatic compression of glassy carbon to 80 GPa",

abstract = "Understanding new mechanisms for phase transformation in carbon is of considerable interest. This study investigates on the compression conditions required to create recoverable diamond during room-temperature high-pressure compression of glassy carbon. Under non-hydrostatic compression conditions when shear is present, glassy carbon transforms into an oriented graphitic structure at ∼45 GPa, and then forms mixed diamond and lonsdaleite nanocrystals when the pressure is higher than ∼80 GPa. In contrast, during hydrostatic compression no significant changes in the microstructure was observed, highlighting glassy carbon's resilience under compression. Molecular dynamics modelling supports the proposed model that shear drives the phase transition mechanism and causes a temperature spike that drives crystallisation. Our work demonstrates that shear is key to high-pressure diamond formation in the absence of heating.",

keywords = "Driving mechanism, Glassy carbon, High-pressure compression, Phase transformation, Room temperature",

author = "Xingshuo Huang and Shiell, {Thomas B.} and Alan Salek and Alireza Aghajamali and Irene Suarez-Martinez and Qingbo Sun and Strobel, {Timothy A.} and McKenzie, {David R.} and Marks, {Nigel A.} and McCulloch, {Dougal G.} and Bradby, {Jodie E.}",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s)",

year = "2024",

month = feb,

day = "10",

doi = "10.1016/j.carbon.2023.118763",

language = "English",

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journal = "Carbon",

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T1 - Comparison of hydrostatic and non-hydrostatic compression of glassy carbon to 80 GPa

AU - Huang, Xingshuo

AU - Shiell, Thomas B.

AU - Salek, Alan

AU - Aghajamali, Alireza

AU - Suarez-Martinez, Irene

AU - Sun, Qingbo

AU - Strobel, Timothy A.

AU - McKenzie, David R.

AU - Marks, Nigel A.

AU - McCulloch, Dougal G.

AU - Bradby, Jodie E.

PY - 2024/2/10

Y1 - 2024/2/10

N2 - Understanding new mechanisms for phase transformation in carbon is of considerable interest. This study investigates on the compression conditions required to create recoverable diamond during room-temperature high-pressure compression of glassy carbon. Under non-hydrostatic compression conditions when shear is present, glassy carbon transforms into an oriented graphitic structure at ∼45 GPa, and then forms mixed diamond and lonsdaleite nanocrystals when the pressure is higher than ∼80 GPa. In contrast, during hydrostatic compression no significant changes in the microstructure was observed, highlighting glassy carbon's resilience under compression. Molecular dynamics modelling supports the proposed model that shear drives the phase transition mechanism and causes a temperature spike that drives crystallisation. Our work demonstrates that shear is key to high-pressure diamond formation in the absence of heating.

AB - Understanding new mechanisms for phase transformation in carbon is of considerable interest. This study investigates on the compression conditions required to create recoverable diamond during room-temperature high-pressure compression of glassy carbon. Under non-hydrostatic compression conditions when shear is present, glassy carbon transforms into an oriented graphitic structure at ∼45 GPa, and then forms mixed diamond and lonsdaleite nanocrystals when the pressure is higher than ∼80 GPa. In contrast, during hydrostatic compression no significant changes in the microstructure was observed, highlighting glassy carbon's resilience under compression. Molecular dynamics modelling supports the proposed model that shear drives the phase transition mechanism and causes a temperature spike that drives crystallisation. Our work demonstrates that shear is key to high-pressure diamond formation in the absence of heating.

KW - Driving mechanism

KW - Glassy carbon

KW - High-pressure compression

KW - Phase transformation

KW - Room temperature

UR - http://www.scopus.com/inward/record.url?scp=85181775673&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2023.118763

DO - 10.1016/j.carbon.2023.118763

M3 - Article

SN - 0008-6223

VL - 219

JO - Carbon

JF - Carbon

M1 - 118763

ER -

Comparison of hydrostatic and non-hydrostatic compression of glassy carbon to 80 GPa

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