Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimir: 2150-766X
ISSN On-line: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2013005390
pages 293-298

LASER IGNITION PROPERTIES OF COMPOSITE NANOMETRIC ENERGETIC MATERIALS

Shawn C. Stacy
Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas, USA
Michelle L. Pantoya
Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409 USA

RESUMO

Laser ignition delay experiments were conducted in order to better understand the effects of thermal and chemical properties on ignition mechanisms for energetic materials. A Nd:YAG laser (10 ms, ~2 J, 3-mm beam diameter, 1064-nm wavelength) was used to heat the top surface of a reactive material powder, and ignition delay was calculated as the difference between first light of the laser's flash lamp and the sample. In the compositions tested, nanometric aluminum (Al) was used as the fuel and combined stoichiometrically with an oxidizer [copper oxide (CuO), iodine pentoxide (I2O5), polytetrafluoroethylene (C2F4), molybdenum trioxide (MoO3), tungsten trioxide (WO3), or iron oxide (Fe2O3)]. Results show that ignition delays for asymmetrical heating are strongly affected by thermal properties. A key result is that ignition delay was found to be inversely proportional to the molar heat capacity of the oxidizer.


Articles with similar content:

LOW-POWER LASER IGNITION OF ALUMINUM/METAL OXIDE NANOTHERMITES
International Journal of Energetic Materials and Chemical Propulsion, Vol.13, 2014, issue 6
Daniel Chamberland, Robert Stowe, Tommy Ringuette, Sophie Ringuette, Catalin Florin Petre, Suzanne Paradis
ON GAS RELEASE BY THERMALLY-INITIATED FULLY-DENSE 2Al·3CuO NANOCOMPOSITE POWDER
International Journal of Energetic Materials and Chemical Propulsion, Vol.11, 2012, issue 3
Alexandre Ermoline, Mirko Schoenitz, Edward L. Dreizin, Rayon A. Williams
THE ENHANCED THERMAL PROPERTIES OF TERNARY CARBONATES NANOFLUIDS WITH OPTIMAL CONCENTRATION OF SiO2 NANOPARTICLES
International Heat Transfer Conference 16, Vol.14, 2018, issue
Wenming Ai, Tai Liu, Lixia Sang
NANO- AND MICROMETER-SCALE ALUMINUM POWDER OXIDATION IN CARBON DIOXIDE
International Journal of Energetic Materials and Chemical Propulsion, Vol.6, 2007, issue 1
Katrina Brandstadt, David L. Frost, Janusz A. Kozinski
FUEL-RICH ALUMINUM−METAL FLUORIDE THERMITES
International Journal of Energetic Materials and Chemical Propulsion, Vol.16, 2017, issue 1
Mirko Schoenitz, Siva Kumar Valluri, Edward L. Dreizin, Ian Monk