Theoretical calculations on critical temperature of hot-spot initiation for in-situ Cu(N3)2 Micro-charge
Critical initiation temperatureis a decisive performance parameter forin-situ Cu(N3)2 micro-charge.Theories on Bruckman-Guilletfirst-order reaction and Rideal-Robertson zero-order reaction were presented and used to calculate the critical initiation temperature of in-situ Cu(N3)2 micro-charge.By comparing the theoretical critical temperature with the experimental data, the first-order reaction assumption was demonstrated to be valid, and the theoretical critical temperatures under different densities and hot-spot radii were programmed.Conclusions show that the activation energy value of the micro-charge is 108.11 kJ/mol, and there are a critical density of 0.105 g/cm3 and a critical hot-spot radius of 2.24×10-4 cm for Cu(N3)2micro-charge.Higher density contributes to initiate explosion of the micro-charge, but makes the charge more sensitive.The radius of the hot-spots must exceed a value to be effectivein initiating explosion.Its meaningful to guide the mechanical design and fabrication process for the copper azide chips.
MEMS initiator Hot-spot initiation Micro-charge Critical temperature
Wei LIU Yan-lan WANG Yan XUE Rui-zhen XIE En-yi CHU Rui ZHANG
国际会议
2018 International Conference on Defence Technology (2018国际防务技术会议)
北京
英文
162-166
2018-10-21（万方平台首次上网日期，不代表论文的发表时间）