Aluminum nanopowders produced by electrical explosion of wires and passivated by non-inert coatings: Characterisation and reactivity with air and water

Results of the comprehensive characterisation of electro-exploded aluminum nanopowders, passivated with the non-inert reagents: oleic acid (C 17H 33COOH) and stearic acid (C 17H 35COOH), which were suspended in kerosene and ethanol, amorphous boron, nickel, fluoropolymer and Al 2O 3 (for a compariso...

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Bibliographic Details
Published in:Powder technology 2006-05, Vol.164 (2), p.111-115
Main Authors: Gromov, Alexander Alexandrovich, Förter-Barth, Ulrich, Teipel, Ulrich
Format: Article
Language:English
Subjects:
Air
Aluminum nanoparticles
DTA-DSC-TG
Non-inert coatings
Passivation
SEM
Stability
TEM
Water
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Summary:Results of the comprehensive characterisation of electro-exploded aluminum nanopowders, passivated with the non-inert reagents: oleic acid (C 17H 33COOH) and stearic acid (C 17H 35COOH), which were suspended in kerosene and ethanol, amorphous boron, nickel, fluoropolymer and Al 2O 3 (for a comparison), are discussed. Aluminum nanopowders with a protecting surface show increased stability towards oxidation in air and in water during the storage period. On the basis of the experimental results, a diagram of the formation and stabilization of the coatings is proposed.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2006.03.003