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 language | English |
|---|---|
| Pages (from-to) | 445-449 |
| Number of pages | 5 |
| Journal | Metals and Materials International |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2012 Jun |
| Externally published | Yes |
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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