Design, Fabrication and Ignition Performance of LTCC Exploding Foil Initiation Chip

被引：0
|
作者：
Zhang Q. [1 ]
Chen K. [2 ]
Zhu P. [1 ]
Xu C. [1 ]
Qin X. [1 ]
Yang Z. [1 ]
Shen R.-Q. [1 ]
机构：
[1] School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing
[2] Beijing Institute of Aerospace Systems Engineering, Beijing
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2019年 / 27卷 / 06期
关键词：
Au bridge foil; Ceramic flyer; Exploding foil initiation chip; Low-temperature co-fired ceramic(LTCC);
D O I：
10.11943/CJEM2018338
中图分类号：
学科分类号：
摘要：
Low-temperature co-fired ceramic(LTCC) technology was employed to realize the integrated fabrication of exploding foil initiation chip. 5 μm thick Au bridge foil(300 μm×300 μm) was prepared by screen printing, using raw porcelain sheets of 25 μm and 50 μm thickness as the flyers for the chip. Two kinds of chips with the barrel shape of circular(Φ =400 μm) and square(L×W=300 μm×300 μm) were obtained. The electrical explosion characteristics of Au bridge foil were studied under the discharge of 0.22 μF capacitor. The velocity characteristics of the ceramic flyer and its morphology in motion process were analyzed by photon Doppler velocimetry. Results show that the maximum energy utilization rate of Au bridge foil at 1.8 kV, and the final speed of flyer increases with the increase of the firing voltage. Besides, the outlet velocity of flyer in square barrel is 106-313 m •s-1, which is higher than that in circular barrel at the same firing condition. In addition, the thicker of the ceramic flyer, the more complete it will be during the course of flying. The exploding foil initiation chip prepared by the LTCC technology can successfully detonate the HNS explosive and ignite the BPN ignition powder. The minimum detonation voltage and minimum ignition voltage of LTCC exploding foil initiation chip(50 μm thick ceramic flyer, circular barrel) are 2.5 kV and 1.4 kV, respectively. © 2019, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：448 / 455
页数：7
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