Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Aging of Solid Fuels Composed of Zr and ZrNi Part 1: Thermal/Chemical/Spectroscopic Analysis

Zr과 ZrNi로 구성된 고체연료의 노화 연구 Part 1: 열/화학/분광학적 분석

  • Han, Byungheon (Mechanical and Aerospace Engineering, Seoul National University) ;
  • Ryu, Jihoon (Mechanical and Aerospace Engineering, Seoul National University) ;
  • Yang, Junho (Mechanical and Aerospace Engineering, Seoul National University) ;
  • Oh, Juyoung (Mechanical and Aerospace Engineering, Seoul National University) ;
  • Gnanaprakash, K. (Mechanical and Aerospace Engineering, Seoul National University) ;
  • Yoh, Jai-ick (Mechanical and Aerospace Engineering, Seoul National University)
  • Received : 2020.02.10
  • Accepted : 2020.03.15
  • Published : 2020.04.01
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Abstract

The characterization of aging of the pyrotechnic device is conducted thermally, chemically, and spectroscopically. The device is comprised of two parts: (i) igniter composed of Zr and (ii) pyrotechnic delay composed of ZrNi alloy. The thermally induced chemical reaction is identified through Differential Scanning Calorimetry (DSC) and Thermogravimetry Analysis (TGA). The peak deconvolution of the themo-chemical data is used to estimate the enthalpy change of each metallic fuel component. Laser Induced Breakdown Spectroscopy (LIBS) and X-ray Photoelectron Spectroscopy (XPS) are used for chemical species analysis. The decomposition of oxidants by moisture significantly affected the fuel aging, and the formation of oxide film and metal oxide on the fuel surface gave rise to the thermal energy decrease.

Zr을 원료로하는 점화제와 ZrNi를 원료로 하는 지연제로 구성된 파이로테크닉스의 노화현상을 열적/화학적/광학적으로 분석하였다. 열적 분석에는 Differential Scanning Calorimetry (DSC) 와 Thermogravimetry Analysis(TGA)를 통해 열 기반의 반응식을 규명했다. DSC의 결과로 수행한 픽 분석기법 (peak deconvolution)을 통해 각 연료의 노화에 따른 열적 변화를 분석하였다. 화학종 변화 분석에는 Laser Induced Breakdown Spectroscopy (LIBS)와 X-ray Photoelectron Spectroscopy (XPS)를 사용하였다. 수분에 의한 산화제의 분해가 연료의 노화에 크게 영향을 미쳤으며, 열에너지 감소의 원인은 연료 표면의 산화막 형성과 산화금속의 형성으로 나타났다.

Keywords

References

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