Graphitization of Glassy Carbon after Compression at Room Temperature

Shiell, T, McCulloch, D, McKenzie, D, Field, M, Haberl, B, Boehler, R, Cook, B, de Tomas, C, Suarez-Martinez, I, Marks, N and Bradby, J 2018, 'Graphitization of Glassy Carbon after Compression at Room Temperature', Physical Review Letters, vol. 120, no. 21, pp. 1-6.

Document type: Journal Article
Collection: Journal Articles

Title Graphitization of Glassy Carbon after Compression at Room Temperature
Author(s) Shiell, T
McCulloch, D
McKenzie, D
Field, M
Haberl, B
Boehler, R
Cook, B
de Tomas, C
Suarez-Martinez, I
Marks, N
Bradby, J
Year 2018
Journal name Physical Review Letters
Volume number 120
Issue number 21
Start page 1
End page 6
Total pages 6
Publisher American Physical Society
Abstract Glassy carbon is a technologically important material with isotropic properties that is nongraphitizing up to ?3000 °C and displays complete or "superelastic" recovery from large compression. The pressure limit of these properties is not yet known. Here we use experiments and modeling to show permanent densification, and preferred orientation occurs in glassy carbon loaded to 45 GPa and above, where 45 GPa represents the limit to the superelastic and nongraphitizing properties of the material. The changes are explained by a transformation from its sp2 rich starting structure to a sp3 rich phase that reverts to fully sp2 bonded oriented graphite during pressure release.
Subject Physical Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified
Engineering not elsewhere classified
Keyword(s) Stress-Induced Formation
DOI - identifier 10.1103/PhysRevLett.120.215701
Copyright notice © 2018 American Physical Society.
ISSN 0031-9007
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