Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Process variables of gamma-type aluminum trihydride in wet chemical synthesis

감마형 삼수소 알루미늄 습식합성반응의 공정변수 연구

  • Yang, Yo-Han (Department of Applied Environmental Science Kyung Hee University) ;
  • Kim, Woo-Ram (Department of Applied Environmental Science Kyung Hee University) ;
  • Gwon, Yoon-Ja (Department of Applied Environmental Science Kyung Hee University) ;
  • Park, Mi-Jeong (Department of Applied Environmental Science Kyung Hee University) ;
  • Kim, Jun-Hyung (Agency for Defense Development) ;
  • Cho, Young-Min (Department of Applied Environmental Science Kyung Hee University)
  • 양요한 (경희대학교 환경응용과학과) ;
  • 김우람 (경희대학교 환경응용과학과) ;
  • 권윤자 (경희대학교 환경응용과학과) ;
  • 박미정 (경희대학교 환경응용과학과) ;
  • 김준형 (국방과학연구소) ;
  • 조영민 (경희대학교 환경응용과학과)
  • Received : 2018.02.19
  • Accepted : 2018.03.20
  • Published : 2018.03.30
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Abstract

Alane(aluminum trihydride, $AlH_3$) is a candidate material involving high energetic capacity for solid propellant or explosives. In this study aluminum trihydride-etherate ($AlH_3{\cdot}(C_2H_5)_2O$) was synthesized through a wet process, and solid alane was extracted by controlled crystallization. Alane crystals were grown during the crystallization step with phase conversion of aluminum trihydride-etherate to alane using an anti-solvent. Stable crystal forms were found by a 2 hour crystallization process at $85^{\circ}C$. Finally the extracted solid aluminium trihydride consisted mainly of ${\gamma}-type$ with $50-100{\mu}m$ in size.

Alane(aluminum trihydride, $AlH_3$)으로 명명되는 고에너지 물질인 삼수소알루미늄은 수소저장물질로서 뿐만 아니라 우주항공분야의 고체 추진제나 방위산업의 화약제조용으로도 사용될 수 있다. 본 연구는 습식공정을 통하여 합성하고, 에테르를 세밀하게 분리하는 결정화 공정을 통하여 최종 수소화물을 추출하였다. 결정화 공정에서 삼수소알루미늄-에테레이트($AlH_3{\cdot}(C_2H_5)_2O$)가 alane으로 상변이하면서 입자가 성장하고, $85^{\circ}C$에서 2 시간의 결정화 시간이 이루어졌을 때 가장 안정된 결정상이 나타나는 모습을 확인하였다. 최종적으로 추출된 고체상 삼수소알루미늄은 막대모양의 ${\gamma}$-형태가 가장 많은 양을 차지하는 것으로 나타났으며, 크기는 $50-100{\mu}m$ 수준이었다.

Keywords

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