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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v6.i2.30
pages 171-180

WHY AND HOW TYPE OF PASSIVATION LAYER AFFECTS THE PROPERTIES OF ALUMINUM NANOPOWDERS FOR ENERGETIC APPLICATIONS

Alexander Gromov
Fraunhofer Institute for Chemical Technology, D-76327 Pfinztal (Berghausen), Germany
Ulrich Forter-Barth
Fraunhofer Institute for Chemical Technology, D-76327 Pfinztal (Berghausen), Germany
Ulrich Teipel
Nuremberg University of Technology Georg-Simon-Ohm, 90121, Nuremberg, Germany

要約

Results of DTA-TG-investigations and chemical analysis of electro-exploded aluminum nanopowders, coated and/or passivated by the reactive reagents: nitrocellulose (NC), ethanol, Teflon, oleic (C17H33COOH) and stearic (C17H35COOH) acid, amorphous boron, nickel, air, and ALEX (for comparison) are shown. The disadvantages of aluminum nanopowders, passivated by air and covered by a thick oxide layer, which affects adversely their energetic properties, are their low metal content and their low stability to further oxidation during storage. Non-oxide coatings, i.e., aluminum nanopowders with a protecting surface are expected to have improved material properties. The kinetics of the interaction of aluminum nanopowders with nitrogen, air, and in water are described.


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