Thermal Expansion, Atomic Vibration, and Molecular Conformation of β-HMX at a Wide Temperature Range Prior to Phase Transformation
Mi Yan,
Liyuan Wei,
Yiyi Xiao
et al.
Abstract:Crystal structure evolution of high-explosive HMX from −100 to 160 °C was studied by in situ single-crystal X-ray diffraction. Thermal expansion properties and the changes in atomic vibration and molecular conformation were investigated. Anisotropic thermal expansion was observed with a preferred direction along the b-axis. More interplanar defects may be generated between the (011) and (020) facets due to the large increasing rate of their interplanar spacings ((3.23 ± 0.09) × 10 −4 and (6.98 ± 0.05) × 10 −4 … Show more
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