Page 56 - 《含能材料》火工品技术合集 2015~2019

多 层 Al/Ni 含 能 薄 膜 在 电 容 放 电 激 励 下 的 能 量 释 放 特 性 和 规 律 161

Characteristics and Laws of Energy Release for Multilayer Al/Ni RMFs Under Capacitive Discharge Excitation

FU Shuai，SHEN Rui⁃qi，ZHU Peng，YE Ying⁃hua，MA Hong⁃ling
（School of Chemical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China）
Abstract：To investigate the characteristics and laws of energy releasefor Al/Ni reactive multilayer films（RMFs），Al/Ni RMFs initi‑
ator with double“V”type angle was fabricated by a micro‑fabrication method and its characteristics and laws of energy release
under 47 μF solid tantalum capacitor discharge excitation were studied. When electric explosion testing，the self‑developed
ALG‑CN1 energy storage discharge detonator was used as an excitation power source. A 47 μF solid tantalum capacitor with a
charging voltage of 10 V to 45 V was used. A high‑speed camera（HG‑100K）was used to observe the firing process of the initia‑
tor. A digital oscilloscope（LeCroy44Xs，4 channnels）was used to record the current and voltage curves of the initiator.Results
show that the electrical explosion process of Al/Ni RMFs initiator can be divided into three stages according to the change rate of
current（dI/dt）：energy storage of parasitic inductance，electrical explosion of initiator and plasma heating. Comparison with NiCr
film initiator of same bridge type，under the same excitation condition of 30 V/47 μF，the fabricated Al/Ni RMFs initiator has high
output energy and long spark spattering distance after electrical explosion. The parasitic inductance of the firing circuit plays an
important role in the initiation of the initiator. The output energy of Al/Ni RMFs initiator during electric explosion mainly comes
from two parts：the input energy of capacitor and the chemical energy released by energetic film. When the excitation voltage is
30 V，the chemical energy contributes to the output energy of Al/Ni RMFs initiator is higher，which can reach 40% of the total
output energy.
Key words：Al/Ni reactive multilayer films；initiator；electrical‑explosion performance；output energy
CLC number：TJ45；O76 Document code：A DOI：10.11943/CJEM2018173

CHINESE JOURNAL OF ENERGETIC MATERIALS 含能材料 2019 年 第 27 卷 第 2 期 （155-161）