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Transient ion ejection during nanocomposite thermite reactions

J. Appl. Phys. 106, 083306 (2009); doi:10.1063/1.3225907

Published 30 October 2009

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Lei Zhou,1 Nicholas Piekiel,1 Snehaunshu Chowdhury,1 Donggeun Lee,2 and Michael R. Zachariah1
1Department of Mechanical Engineering and Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
2School of Mechanical Engineering, Pusan National University, 30 Jangjeon, Geumjeong, Busan 609-735, Republic of Korea
We observe an intense ion pulse from nanocomposite thermite reactions, which we temporally probe using a recently developed temperature jump/time of flight mass spectrometer. These ion pulses are observed to be much shorter in duration than the overall thermite reaction time. Ion ejection appears in stages as positive ions are ejected prior to nanocomposite thermite ignition, and ignition of the thermite mixtures leads to a second ionization step which is primarily dominated by negative species. The positive species are identified from mass spectrometric measurements and the results show that the positive ion species are comprised of Na ions with minor species of Al and K ions. This observation can be explained by a diffusion based ion-current mechanism, in which strong Al ion diffusion flux formed through the oxide shell, and the surface Na and K ions from salt contaminations are ejected by the strong electrostatic repulsion. The fact that the negative ionization step occurs during the ignition event suggests a strong relation between the nanocomposite thermite reaction and the negative ionization process. ©2009 American Institute of Physics
History: Received 4 June 2009; accepted 14 August 2009; published 30 October 2009
Permalink: http://link.aip.org/link/?JAPIAU/106/083306/1
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KEYWORDS and PACS

Keywords
PACS
  • 82.33.Vx
    Chemical reactions in flames, combustion, and explosions
  • 82.80.Rt
    Time of flight mass spectrometry (chemical analysis)
  • 68.35.Fx
    Diffusion; interface formation (solid surfaces)
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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REFERENCES (35)
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  1. K. Sullivan, G. Young, and M. R. Zachariah, Combust. Flame 156, 302 (2009).
  2. S. M. Umbrajkar, S. Seshadri, M. Schoenitz, V. K. Hoffmann, and E. L. Dreizin, J. Propul. Power 24, 192 (2008).
  3. A. Prakash, A. V. McCormick, and M. R. Zachariah, Nano Lett. 5, 1357 (2005).
  4. L. Zhou, N. Piekiel, S. Chowdhury, and M. R. Zachariah, Rapid Commun. Mass Spectrom. 23, 194 (2009).
  5. G. Young, K. Sullivan, and M. R. Zachariah, Combust. Flame 156, 322 (2009).
  6. V. E. Sanders, B. W. Asay, T. J. Foley, B. C. Tappan, A. N. Pacheco, and S. F. Son, J. Propul. Power 23, 707 (2007).
  7. M. L. Pantoya and J. J. Granier, J. Therm. Anal. Calorim. 85, 37 (2006).
  8. M. A. Trunov, M. Schoenitz, and E. L. Dreizin, Propellants, Explos., Pyrotech. 30, 36 (2005).
  9. K. B. Plantier, M. L. Pantoya, and A. E. Gash, Combust. Flame 140, 299 (2005).
  10. A. B. Fialkov, Prog. Energy Combust. Sci. 23, 399 (1997).
  11. I. A. Filimonov and N. I. Kidin, Shock Waves 41, 639 (2005).
  12. A. P. Ershov, Combust., Explos. Shock Waves 11, 798 (1975).
  13. M. Setoodeh, K. S. Martirosyan, and D. Lussa, J. Appl. Phys. 99, 084901 (2006).
  14. K. S. Martirosyan, M. Setoodeh, and D. Luss, J. Appl. Phys. 98, 054901 (2005).
  15. A. I. Kirdyashkin, V. L. Polyakov, Y. M. Maksimov, and V. S. Korogodov, Combust., Explos. Shock Waves 40, 180 (2004).
  16. K. S. Martirosyan, J. R. Claycomb, J. H. Miller, Jr., and D. Luss, J. Appl. Phys. 96, 4632 (2004).
  17. D. L. Igor Filimonov, AIChE J. 50, 2287 (2004).
  18. K. S. Martirosyan, J. R. Claycomb, G. Gogoshin, R. A. Yarbrough, J. H. Miller, and D. Luss, J. Appl. Phys. 93, 9329 (2003).
  19. K. S. Martirosyan, I. A. Filimonov, and D. Luss, Int. J. Self-Propag. High-Temp. Synth. 12, 91 (2003).
  20. K. S. Martirosyan, I. A. Filimonov, M. D. Nersesyan, and D. Luss, J. Electrochem. Soc. 150, J9 (2003).
  21. B. J. Henz, T. Hawa, and M. R. Zachariah, “On the role of built-in electric fields on oxidation of oxide coated nanoaluminum: Ion mobility versus Fickian diffusion,” J. Appl. Phys. (in press).
  22. Z. A. Munir, Mater. Sci. Eng., A 287, 125 (2000).
  23. F. B. Carleton and F. J. Weinberg, Nature (London) 330, 635 (1987).
  24. D. G. Tasker, B. W. Asay, J. C. King, V. E. Sanders, and S. F. Son, J. Appl. Phys. 99, 023705 (2006).
  25. V. S. Korogodov, A. I. Kirdyashkin, Y. M. Maksimov, A. A. Trunov, and R. M. Gabbasov, Combust., Explos. Shock Waves 41, 481 (2005).
  26. L. Zhou, N. Piekiel, S. Chowdhury, and M. R. Zachariah (in preparation).
  27. S. Chowdhury, K. Sullivan, N. Piekiel, L. Zhou, and M. R. Zachariah, J. Phys. Chem. C (submitted).
  28. A. Atkinson, Rev. Mod. Phys. 57, 437 (1985).
  29. A. T. Fromhold, Jr., Theory of Metal Oxidation (North-Holland, Amsterdam, 1980), Vol. 2.
  30. A. T. Fromhold, Jr., Theory of Metal Oxidation (North-Holland, Amsterdam, 1976), Vol. 1.
  31. A. Rai, K. Park, L. Zhou, and M. R. Zachariah, Combust. Theory Modell. 10, 843 (2006).
  32. A. T. Fromhold and E. L. Cook, Phys. Rev. 175, 877 (1968).
  33. C. Wagner, Z. Phys. Chem. Abt. B 21, 25 (1933).
  34. N. Cabrera and N. F. Mott, Rep. Prog. Phys. 12, 163 (1948).
  35. V. P. Zhdanov and B. Kasemo, Chem. Phys. Lett. 452, 285 (2008).

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