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  4. Microstructure of Aluminum Hydride and Stabilization Concepts
 
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2022
Conference Paper
Title

Microstructure of Aluminum Hydride and Stabilization Concepts

Abstract
Aluminum hydride (AlH3, alane) is a promising substance for hydrogen and energy storage systems, rocket propellants, and space applications [e. g. 1-4]. The substance is sensitive against humidity and oxidation, and will decompose in air and water, although passivation greatly diminishes the decomposition rate [5]. A high stability variant was produced in former Soviet Russia and was even used in the ballistic missiles SS-24. The material is however not commercially available, and details of the synthesis and production (stabilization) are unknown [6]. Investigations of this product at the Fraunhofer ICT in the early 2000s revealed interesting details, but no conclusive stabilization concepts [7, 8]. With rising new interest for applications of alane in solid rocket propellants at the Fraunhofer ICT, e. g. due to a potential increase of the specific impulse of ADN/GAP propellants by about 10 %, new structure investigations were restarted with modern characterization technologies available today. Besides, new literature contributions have been reviewed including stabilization mechanisms, related microstructures and alane provider [9]. The investigations revealed new structural aspects and stabilization concepts.
Author(s)
Herrmann, Michael  
Fraunhofer-Institut für Chemische Technologie ICT  
Förter-Barth, Ulrich  
Fraunhofer-Institut für Chemische Technologie ICT  
Weyrauch, Hubert  
Fraunhofer-Institut für Chemische Technologie ICT  
Juez Lorenzo, Maria del Mar  
Fraunhofer-Institut für Chemische Technologie ICT  
Kempa, Paul Bernd
Fraunhofer-Institut für Chemische Technologie ICT  
Mainwork
Energetic Materials - Exploring and Understanding  
Conference
Fraunhofer Institute for Chemical Technology (ICT International Annual Conference) 2022  
Open Access
File(s)
Download (676.06 KB)
Rights
CC BY-NC-ND 4.0: Creative Commons Attribution-NonCommercial-NoDerivatives
DOI
10.24406/publica-223
Language
English
Fraunhofer-Institut für Chemische Technologie ICT  
Keyword(s)
  • energetic material

  • aluminum hydride

  • stabilization

  • micro structure

  • X-ray diffraction

  • confocal microscopy

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