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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
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the Defense Acquisition Program Administration and the Agency for Defense Development under the contract UD070021AD.

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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