Nanotubes Made from Deeply Undercooled Cryolite/Alumina Melts |
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| Authors: | Michal Korenko Marián Kucharík Jozef Vincenc Oboňa Dušan Janičkovič Rosa Córdoba José María De Teresa Blanka Kubíková |
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| Affiliation: | 1. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, SK‐845?36 Bratislava (phone: +421?2?59410?463;2. fax: +421?2?59410?444);3. Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska cesta 9, SK‐845?36 Bratislava;4. Instituto Universitario de Nanociencia de Aragón, University of Zaragoza, Pedro Cerbuna 12, ES‐50009 Zaragoza;5. Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, SK‐845?36 Bratislava;6. Instituto de Ciencia de Materiales de Aragón, CSIC‐University of Zaragoza, ES‐50009 Zaragoza |
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| Abstract: | The rapid‐solidification processing (by a cooling rate of 105–106 K/s) was used for the preparation of deeply undercooled cryolite/alumina (Na3AlF6/Al2O3) melts. We found a mass of nanotubes on the surface of these undercooled melts. The nanotubes were preferentially located on the defect places of the surface with the following approximate dimensions: base≈100×100 nm, length≈1000 nm. The solidified samples with the nanotubes on the surface were analyzed by scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDX), X‐ray diffraction (XRD), and infrared spectroscopy (IR). |
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| Keywords: | Nanotubes Cryolite melts Rapid solidification processing Alumina Energy‐dispersive X‐ray spectroscopy (EDX) X‐Ray crystallography Scanning electron microscopy |
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