Phase transitions of ϵ-HNIW in compound systems

Jing Yuan Zhang; Xue Yong Guo; Qing Jie Jiao; Pu Zhang

doi:10.1063/1.4950856

Phase transitions of ϵ-HNIW in compound systems

Jing Yuan Zhang, Xue Yong Guo^*, Qing Jie Jiao, Pu Zhang

^*Corresponding author for this work

School of Mechatronical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The heat-induced phase transitions of ϵ-HNIW, both neat and coated with various additives used in plastic bonded explosives, were investigated using powder X-ray diffraction and differential scanning calorimetry. It was found that ϵ-HNIW, after being held at 70°C for 60h, remained in the ϵ-phase. Applying other conditions, various phase transition parameters were determined, including T_c (the critical phase transition temperature), T₅₀ (the temperature at which 50% of the phase transition is complete) and T₁₈₀ (the percentage of γ-HNIW present in samples heated to 180°C). According to the above three parameters, additives were divided into three categories: those that delay phase transition, those that raise the critical temperature and the transition rate, and those that promote the phase transition. Based on the above data, a phase transition mechanism is proposed.

Original language	English
Article number	055016
Journal	AIP Advances
Volume	6
Issue number	5
DOIs	https://doi.org/10.1063/1.4950856
Publication status	Published - 1 May 2016

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Zhang, J. Y., Guo, X. Y., Jiao, Q. J., & Zhang, P. (2016). Phase transitions of ϵ-HNIW in compound systems. AIP Advances, 6(5), Article 055016. https://doi.org/10.1063/1.4950856

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abstract = "The heat-induced phase transitions of ϵ-HNIW, both neat and coated with various additives used in plastic bonded explosives, were investigated using powder X-ray diffraction and differential scanning calorimetry. It was found that ϵ-HNIW, after being held at 70°C for 60h, remained in the ϵ-phase. Applying other conditions, various phase transition parameters were determined, including Tc (the critical phase transition temperature), T50 (the temperature at which 50% of the phase transition is complete) and T180 (the percentage of γ-HNIW present in samples heated to 180°C). According to the above three parameters, additives were divided into three categories: those that delay phase transition, those that raise the critical temperature and the transition rate, and those that promote the phase transition. Based on the above data, a phase transition mechanism is proposed.",

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Phase transitions of ϵ-HNIW in compound systems

Abstract

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