Ohishi, Yuji und Kargl, Florian und Nakamori, F und Muta, Hiroaki und Kurosaki, Ken und Yamanaka, Shinsuke (2017) Physical properties of core-concrete systems: Al2O3-ZrO2 molten materials measured by aerodynamic levitation. Journal of Nuclear Materials, 487, Seiten 121-127. Elsevier. doi: 10.1016/j.jnucmat.2017.02.002. ISSN 0022-3115.
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Kurzfassung
During a molten coreeconcrete interaction, molten oxides consisting of molten core materials (UO2 and ZrO2 ) and concrete (Al2O3, SiO2, CaO) are formed. Reliable data on the physical properties of the molten oxides will allow us to accurately predict the progression of a nuclear reactor core meltdown accident. In this study, the viscosities and densities of molten (ZrO2 )x(Al2O3)1-x (x = 0.356 and 0.172) were measured using an aerodynamic levitation technique. The densities of two small samples were estimated from their masses and their volumes (calculated from recorded images of the molten samples). The droplets were forced to oscillate using speakers, and their viscosities were evaluated from the damping behaviors of their oscillations. The results showed that the viscosity of molten (ZrO2)x(Al2O3)1-x compared to that of pure molten Al2O3 is 25% lower for x = 0.172, while it is unexpectedly 20% higher for x = 0.356.
elib-URL des Eintrags: | https://elib.dlr.de/111272/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | Physical properties of core-concrete systems: Al2O3-ZrO2 molten materials measured by aerodynamic levitation | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 3 Februar 2017 | ||||||||||||||||||||||||||||
Erschienen in: | Journal of Nuclear Materials | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 487 | ||||||||||||||||||||||||||||
DOI: | 10.1016/j.jnucmat.2017.02.002 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 121-127 | ||||||||||||||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||||||||||||||
ISSN: | 0022-3115 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Molten coreeconcrete interaction Molten ZrO2-Al2O3 Aerodynamic levitation technique Viscosity Density | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Materialdesign und neue Materialien, R - Vorhaben Materialforschung unter Mikro-g (alt) | ||||||||||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Materialphysik im Weltraum > Wissenschaftliche Experimente | ||||||||||||||||||||||||||||
Hinterlegt von: | Kargl, Dr Florian | ||||||||||||||||||||||||||||
Hinterlegt am: | 28 Feb 2017 07:27 | ||||||||||||||||||||||||||||
Letzte Änderung: | 06 Sep 2019 15:18 |
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