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The shear-driven transformation mechanism from glassy carbon to hexagonal diamond

Wong, Sherman; Shiell, Thomas; Cook, B. A.; Bradby, Jodie; McKenzie, D. R.; McCulloch, D. G.


Hexagonal diamond, a potentially superhard material, forms from a glassy carbon precursor at pressuresof ~100 GPa at the relatively low temperature of 400 C. The formation mechanism of the hexagonaldiamond phase was investigated by performing microstructural analysis on cross-sections of therecovered samples. Three distinct structures have been observed, a graphitic region near the centre of thesample with low density, a hexagonal diamond region at the edge of the sample with high density, and...[Show more]

CollectionsANU Research Publications
Date published: 2019-02
Type: Journal article
Source: Carbon
DOI: 10.1016/j.carbon.2018.10.080
Access Rights: Open Access


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