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Viscosity measureme...
Viscosity measurement of molten alumina and zirconia using aerodynamic levitation, laser heating and droplet oscillation techniques
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- Gong, Yaopeng (författare)
- Department of Engineering Physics, Tsinghua University, Beijing, China; China Nuclear Power Engineering Co., Ltd (CNPE), Beijing, China
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- zhang, Li (författare)
- China Nuclear Power Engineering Co., Ltd (CNPE), Beijing, China
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- Yuan, Yidan (författare)
- China Nuclear Power Engineering Co., Ltd (CNPE), Beijing, China
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- Guo, Qiang (författare)
- China Nuclear Power Engineering Co., Ltd (CNPE), Beijing, China
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- Ma, Weimin (författare)
- KTH,Kärnkraftssäkerhet
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- Huang, Shanfang (författare)
- Department of Engineering Physics, Tsinghua University, Beijing, China
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Department of Engineering Physics, Tsinghua University, Beijing, China; China Nuclear Power Engineering Co, Ltd (CNPE), Beijing, China China Nuclear Power Engineering Co., Ltd (CNPE), Beijing, China (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: Heliyon. - : Elsevier BV. - 2405-8440. ; 9:12
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Reliable thermophysical properties of core melt (corium) are essential for the accurate prediction of the severe accident progression in light water reactors. Zirconia is one of the most important materials in corium. Despite the high interest in the viscosity of molten zirconia, few experimental data have been reported due to its high melting temperature and high vapor pressure. In the present study, the viscosity of molten zirconia was measured using aerodynamic levitation, laser heating and droplet oscillation techniques. A material sample was levitated by argon gas flow in a conical nozzle and then melted into a droplet by laser beams. The initial quiescent droplet was forced to oscillate by the excitation of a loudspeaker, and the viscosity was deduced based on the characteristics of the droplet damped oscillation after the loudspeaker was turned off. The viscosity of molten alumina was first measured for verification of the measurement system. Afterwards the viscosity of molten zirconia was measured. The results showed that the viscosity of molten zirconia at melting temperature (2988K) was 12.87 ± 1.03 mPa s and decreased with increasing temperature. The measurement uncertainties are within 21 %.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Aerodynamic levitation
- Alumina
- Droplet oscillation
- Laser heating
- Viscosity
- Zirconia
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- art (ämneskategori)
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