Non-isothermal oxidation of aluminum nanopowder coated by hydrocarbons and fluorohydrocarbons

A. Sossi, E. Duranti, C. Paravan, L. T. Deluca, A. B. Vorozhtsov, A. A. Gromov, Yu I. Pautova, Marat Izrailevich Lerner, N. G. Rodkevich

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37 Citations (Scopus)

Abstract

Aluminum nanopowder (nAl) obtained by electrical explosion of wires and passivated/coated with hydrocarbons and fluorohydrocarbons is comprehensively characterized. Coatings of different natures (octadecanoic and hexadecanoic acid, (1,1,11) trihydroperfluoro-undecan-1-ol, Fluorel™ + ester from esterification of (1,1,11) trihydroperfluoro-undecan-1-ol with furan-2,5-dione) were applied on the particle surface. The powders were studied by TEM, SEM, DSC-TGA, and BET specific surface area. The active aluminum content was determined by volumetric analyses. Coated nAl particles were compared to non-coated powder by the corresponding reactivity parameters obtained from DSC-TGA. It was found that while fatty acids have a weak effect on the non-isothermal oxidation behavior, fluoroelastomers shift the oxidation onset of nAl to higher temperatures by ∼20 °C for the first oxidation stage and by ∼100 °C for the second oxidation stage.

Original languageEnglish
Pages (from-to)337-343
Number of pages7
JournalApplied Surface Science
Volume271
DOIs
Publication statusPublished - 15 Apr 2013

Keywords

  • Aluminum nanopowder
  • Coating
  • Oxidation
  • Passivation
  • Surface structure

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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    Sossi, A., Duranti, E., Paravan, C., Deluca, L. T., Vorozhtsov, A. B., Gromov, A. A., Pautova, Y. I., Lerner, M. I., & Rodkevich, N. G. (2013). Non-isothermal oxidation of aluminum nanopowder coated by hydrocarbons and fluorohydrocarbons. Applied Surface Science, 271, 337-343. https://doi.org/10.1016/j.apsusc.2013.01.197