Preparation and properties of a new high-energy metal (W) film/aluminum nitride system energy exchanger electrothermal pyrogenant

In order to improve the safety and energy exchange efficiency of electric thermal pyrotechnic devices, a new energy exchange element technology of high energy metal (W) film/aluminum nitride ceramic was explored by taking advantage of the high thermal conductivity of aluminum nitride ceramic materials. High-temperature co-fired ceramics were used to prepare the new system energy exchangers, and the prototype of the new system energy exchanger of high-energy metal (W) film/aluminum nitride was obtained. Through infrared microscopic test and ignition performance test, the new system energy exchanger of high-energy metal (W) film/aluminum nitride can satisfy the 1A1W5min non-ignition test, and the ignition current of 50% is 2.80 A. The response current of 99.9% is 3.54 A, and the response current of 0.1% is 2.06 A, which provides technical support for the application of a new type of passivated electric thermal pyrogenic product.