Sub-Microsecond Graphite-Diamond Transformation at Normal and Elevated Temperatures
Abstract
The graphite-diamond transformation was studied under conditions of shock compression at initial temperatures of 293 K and 750 K. The VISAR particle velocity histories were recorded at the interface between a graphite sample and a LiF window. Results of measurements at normal and elevated temperatures were analyzed using wide-range equations of state of graphite, LiF and aluminum. It has been found the transition pressure decreases with heating from 18.9 to 16.9 GPa and from 20.3 to 18.3 GPa for graphites with 5% and 27% of rhombohedral phase, respectively.
- Publication:
-
Shock Compression of Condensed Matter 2009
- Pub Date:
- December 2009
- DOI:
- 10.1063/1.3295011
- Bibcode:
- 2009AIPC.1195.1175S
- Keywords:
-
- phase transitions;
- shock waves;
- high-pressure effects;
- 64.70.-p;
- 47.40.Nm;
- 62.50.-p;
- Specific phase transitions;
- Shock wave interactions and shock effects;
- High-pressure effects in solids and liquids