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Electro-explosion and Ignition Performance of the RuO2 Ignition Bridge
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School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

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    Abstract:

    To simplify the production process of ruthenium oxide(RuO2) ignition bridge, improve the output energy and meet the requirements of low energy ignition and rapid response, the 30 kinds of V-type RuO2 ignition bridges with different structure size were designed and manufactured by a low-temperature co-fired ceramic(LTCC) technology. The electro-explosion properties of the bridge under constant-voltage excitation were investigated. The ignition ability of B/KNO3 mixture was evaluated according to the ignition test results of B/KNO3 mixture. The results show that the design of V-type structure is conducive to improving the current density in the bridge area and forming hot points in the narrowest part of the V-type bridge, which is conducive to reducing the energy required by electro-explosion.The angle, length/width ratio and width of the V-type RuO2 ignition bridge have great influence on electro-explosion performance. Under 40 V constant-voltage excitation, when the angle, length/width ratio and width of the narrowest place of V-type RuO2 ignition bridge are 60°, 0.43 and 100 μm, respectively, the input energy required by electro-explosion is small, its value is 1.47 mJ, the output energy is maximum, its value is 8.46 mJ, which can ignite B/KNO3 mixture.

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徐威,代骥,许建兵,等.氧化钌点火桥电爆及点火性能[J].含能材料,2019,27(2):144-148.
XU Wei, DAI Ji, XU Jian-bing, et al. Electro-explosion and Ignition Performance of the RuO2 Ignition Bridge[J]. Chinese Journal of Energetic Materials,2019,27(2):144-148.

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History
  • Received:April 26,2018
  • Revised:October 25,2018
  • Adopted:July 27,2018
  • Online: September 18,2018
  • Published: February 25,2019