Fragmentation of Ammonium Nitrate Particles under Thermal Cycling
Abstract: Ammonium nitrate finds application in explosives and chlorine‐free slow‐burning propellants. Different phases are known for this ammonium salt, each of them featured by peculiar bulk densities. As a consequence, the variation of storage temperature induces processes of expansion‐contraction in the crystals, unless specific stabilization is performed. In this paper, a batch of raw ammonium nitrate particles has been thermally cycled between −30 °C to +60 °C and analyzed. Microscopic observations, particle size measurement, and X‐ray microtomography showed that the particles undergo a progressive fragmentation process, with opening of internal cracks and voids. The tested material halved its mass‐mean diameter after five thermal cycles. As a term of comparison, a phase‐stabilized ammonium nitrate batch was tested under the same conditions, showing no effect.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Fragmentation of Ammonium Nitrate Particles under Thermal Cycling ; volume:43 ; number:3 ; year:2018 ; pages:315-319 ; extent:5
Propellants, explosives, pyrotechnics ; 43, Heft 3 (2018), 315-319 (gesamt 5)
- Creator
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Maggi, Filippo
Garg, Priya
- DOI
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10.1002/prep.201700230
- URN
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urn:nbn:de:101:1-2022091107520115788670
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:35 AM CEST
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Associated
- Maggi, Filippo
- Garg, Priya
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