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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.i2.10
pages 143-151

AGGLOMERATION AND IGNITION OF ALUMINUM PARTICLES COATED BY NICKEL

Valery Rosenband
Faculty of Aerospace Engineering, Technion- Israel Institute of Technology, Haifa 32000, Israel
Alon Gany
Sylvia and David IA Fine Rocket Propulsion Center and the Aerothermodynamics Lab, Faculty of Aerospace Engineering, Technion – Israel Institute of Technology, Haifa, 3200003, Israel

要約

Agglomeration and ignition of aluminum particles coated by nickel have been investigated. A controlled chemical deposition technique for coating aluminum particles by nickel was developed. Coated Al particles with nickel content from 1 to 15 wt% were produced. Investigations of the behavior of the nickel-coated Al particles during their heating in nitrogen and air were carried out. It was shown that, while uncoated Al particles agglomerate during heating, the coated aluminum particles do not agglomerate and remain in a powder form. Also, experiments demonstrated better ignitability of the nickel-coated Al particles in comparison with regular Al particles, where ignition temperature depends on the initial nickel content. Improvement of ignitability of the coated Al particles is explained by the exothermic reaction between nickel and aluminum and by thermal and mechanical properties of the formed intermetallics.