Publication de 6 numéros par an
ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678
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AGGLOMERATION AND IGNITION OF ALUMINUM PARTICLES COATED BY NICKEL
RÉSUMÉ
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.