Phase Changes in Carbon and Nitrogen Systems: Their Effects on the Detonation Properties of High Explosives.

摘要

The first part of this paper describes a new three-phase equation of state of condensed carbon and effective intermolecular potentials of N2 N2), N2 N, and N pairs in fluid phase. We then examine a supercritical phase change in N2 H2O mixtures using computer simulations and a chemical equilibrium model. The second part deals with applications to two explosives, RX-23-AB and LX-14. The calculation shows that the detonation behavior of these explosives is relatively insensitive to the dissociation of nitrogen (to 90 GPa) but sensitive to the predicted N2 H2O phase separation. For LX-14 we predict that diamond in detonation products will melt near 70 GPa along the Hugoniot and will transform to graphite near 8.5 GPa along the Chapman-Jouguet adiabat. 26 refs., 5 figs., 2 tabs.