Effect of a superhydrophobic coating on the combustion of aluminium and iron oxide nanothermites

Eric Nixon, Michelle L. Pantoya, Ganapathy Sivakumar, Ashwin Vijayasai, Tim Dallas

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

There is an interest in broadening the range of applications of nanoenergetic composite materials to include their combustion and energy generation in submerged environments. Currently, their use is primarily limited to gas environments. Oceanic power generation, underwater ordnance, propulsion, metal cutting, and torch technologies are examples of applications that would significantly benefit from nanocomposite energetic materials. Recent research on superhydrophobic coatings has made it possible to coat nanoenergetic samples using a vapor-phase deposition process which significantly reduces the detrimental effects of water entering the composite that can occur during wet-chemistry based superhydrophobic processes. In this work, we discuss the process utilized to produce the superhydrophobic coating on nanoenergetic materials. We then analyze the bubble energy produced and compare this value to other energetic formulations. It was found that the ratio of the bubble energy to the total energy of combustion was an order of magnitude higher for the superhydrophobic coated materials compared to energetic composites containing a hydrophobic binder.

Original languageEnglish
Pages (from-to)5103-5108
Number of pages6
JournalSurface and Coatings Technology
Volume205
Issue number21-22
DOIs
StatePublished - Aug 25 2011

Keywords

  • Combustion
  • Nanoenergetic
  • Submerged reactions
  • Superhydrophobic coating
  • Thermite

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