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Interfacial and volumetric kinetics of the β→δ phase transition in the energetic nitramine octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine based on the virtual melting mechanism
The Journal of Chemical Physics (2006)
  • Valery I. Levitas, Texas Tech University
  • Laura B. Smilowitz, Los Alamos National Laboratory
  • Bryan F. Henson, Los Alamos National Laboratory
  • Blaine W. Asay, Los Alamos National Laboratory
Abstract

In the recent papers, 1,2 we presented a thermodynamic and kinetic model of the β→δ phase transformation (PT) in the organic energetic crystal octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). It was based on the hypothesis that the kinetics of the β→δ PT is governed by the thermodynamics of melting of the δ phase. In particular, the activation energy for growth was found to be equal to the heat of fusion Δhδ→m . Nucleation was modeled empirically by the reversible first-order kinetics. The proposed kinetics described the experimental data quite well, however, a number of questions still remain.

Keywords
  • Center for Mechanochemistry and Synthesis of New Materials
Publication Date
2006
Publisher Statement

This article is from The Journal of Chemical Physics124 (2006): 026101, doi:10.1063/1.2140698. Posted with permission.

Citation Information
Valery I. Levitas, Laura B. Smilowitz, Bryan F. Henson and Blaine W. Asay. "Interfacial and volumetric kinetics of the β→δ phase transition in the energetic nitramine octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine based on the virtual melting mechanism" The Journal of Chemical Physics Vol. 124 (2006)
Available at: http://works.bepress.com/valery_levitas/33/