Characteristics of fe powders prepared by spray pyrolysis from a spray solution with ethylene glycol as the source material of heat pellet

H. Y. Koo, J. H. Kim, S. K. Hong, Y. N. Ko, H. C. Jang, D. S. Jung, J. M. Han, Y. J. Hong, Y. C. Kang, S. H. Kang, S. B. Cho

Research output: Contribution to journalArticle

Abstract

Fe powders as the heat pellet material for thermal batteries are prepared from iron oxide powders obtained by spray pyrolysis from a spray solution of iron nitrate with ethylene glycol. The iron oxide powders with hollow and thin wall structure produce Fe powders with elongated structure and fine primary particle size at a low reducing temperature of 615 °C. The mean size of the primary Fe powders with elongated structure decreases with increasing concentration of ethylene glycol dissolved into the spray solution. The heat pellets prepared from the fine-size Fe powders with elongated structure have good ignition sensitivities below 1 watt. The heat pellets formed from the Fe powders obtained from the spray solution with 0.5 M EG have an extremely high burn rate of 26 cms -1.

Original languageEnglish
Pages (from-to)445-449
Number of pages5
JournalMetals and Materials International
Volume18
Issue number3
DOIs
Publication statusPublished - 2012 Jun

Keywords

  • Chemical synthesis
  • Energy storage materials
  • Microstructure
  • Scanning electron microscopy (SEM)
  • Thermal battery

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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    Koo, H. Y., Kim, J. H., Hong, S. K., Ko, Y. N., Jang, H. C., Jung, D. S., Han, J. M., Hong, Y. J., Kang, Y. C., Kang, S. H., & Cho, S. B. (2012). Characteristics of fe powders prepared by spray pyrolysis from a spray solution with ethylene glycol as the source material of heat pellet. Metals and Materials International, 18(3), 445-449. https://doi.org/10.1007/s12540-012-3010-6