skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Transformation of shock-compressed graphite to hexagonal diamond in nanoseconds

Abstract

The graphite-to-diamond transformation under shock compression has been of broad scientific interest since 1961. The formation of hexagonal diamond (HD) is of particular interest because it is expected to be harder than cubic diamond and due to its use in terrestrial sciences as a marker at meteorite impact sites. However, the formation of diamond having a fully hexagonal structure continues to be questioned and remains unresolved. Using real-time (nanosecond), in situ x-ray diffraction measurements, we show unequivocally that highly oriented pyrolytic graphite, shock-compressed along the c axis to 50 GPa, transforms to highly oriented elastically strained HD with the (100)HD plane parallel to the graphite basal plane.

Authors:
ORCiD logo; ORCiD logo; ; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1408127
Resource Type:
Journal Article
Resource Relation:
Journal Name: Science Advances; Journal Volume: 3; Journal Issue: 10
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE

Citation Formats

Turneaure, Stefan J., Sharma, Surinder M., Volz, Travis J., Winey, J. M., and Gupta, Yogendra M. Transformation of shock-compressed graphite to hexagonal diamond in nanoseconds. United States: N. p., 2017. Web. doi:10.1126/sciadv.aao3561.
Turneaure, Stefan J., Sharma, Surinder M., Volz, Travis J., Winey, J. M., & Gupta, Yogendra M. Transformation of shock-compressed graphite to hexagonal diamond in nanoseconds. United States. doi:10.1126/sciadv.aao3561.
Turneaure, Stefan J., Sharma, Surinder M., Volz, Travis J., Winey, J. M., and Gupta, Yogendra M. Sun . "Transformation of shock-compressed graphite to hexagonal diamond in nanoseconds". United States. doi:10.1126/sciadv.aao3561.
@article{osti_1408127,
title = {Transformation of shock-compressed graphite to hexagonal diamond in nanoseconds},
author = {Turneaure, Stefan J. and Sharma, Surinder M. and Volz, Travis J. and Winey, J. M. and Gupta, Yogendra M.},
abstractNote = {The graphite-to-diamond transformation under shock compression has been of broad scientific interest since 1961. The formation of hexagonal diamond (HD) is of particular interest because it is expected to be harder than cubic diamond and due to its use in terrestrial sciences as a marker at meteorite impact sites. However, the formation of diamond having a fully hexagonal structure continues to be questioned and remains unresolved. Using real-time (nanosecond), in situ x-ray diffraction measurements, we show unequivocally that highly oriented pyrolytic graphite, shock-compressed along the c axis to 50 GPa, transforms to highly oriented elastically strained HD with the (100)HD plane parallel to the graphite basal plane.},
doi = {10.1126/sciadv.aao3561},
journal = {Science Advances},
number = 10,
volume = 3,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}