Phase diagram of RDX (hexahydro-1,3,5-trinitro-s-triazine) at high pressures and temperatures |
| |
| Authors: | Malcolm Nicol Jimmie C Oxley Bruce J Baer |
| |
| Institution: | 1. Department of Chemistry and Biochemistry , Univeristy of California , Los Angeles, CA, 90024-1569, USA;2. Department of Chemistry , New Mexico Institute of Mining and Technology , Socorro, NM, 87801, USA |
| |
| Abstract: | Abstract The phase diagram of RDX-h6 (hexahydro-1,3,5-trinito-s-triazine) and RDX-d6 has been studied by Raman spectroscopy to more than 13 GPa at 295 K and 7.5 GPa between 150 and 450 K. Two stable high pressure phases have been found. γ-RDX or RDX-III forms from α-RDX above 3.8 GPa below 380 K. β-RDX forms when α- or γ-RDX are heated, can be retained metastably at low temperatues, and may be related to a very unstable form occasionally recovered at ambient pressure. Deuterium isotopic substitution and shear increase the temperature where β-RDX begins to form on heating. |
| |
| Keywords: | Hexahydro-1 3 5-trinitro-s-triazine phase diagram Raman spectra |
|
|
