| Autor: |
E.V. Morozov, S.V. Kniga, V.M. Bouznik, A.S. Voronin |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Materials Science. 8:9-18 |
| ISSN: |
1684-579X |
| DOI: |
10.31044/1684-579x-2021-0-8-9-18 |
| Popis: |
The aqueous suspensions of nanosized alumina fibers and ice composite materials based on them were studied using Pulsed-Field Gradient NMR and Magnetic Resonance Imaging methods. It is shown that the introduction of nanofibers does not lead to noticeable structural effects in suspensions in the concentration range of 1 - 10 wt. % Al2O3. It was found that a high concentration of filler significantly changes the morphology and texture of the ice matrix in composites: it becomes more homogeneous, with a high degree of continuity; when the melting front passes through, internal regions of thawing or failure of the integrity of the composite are not visualized. Yet the introduction of nanofibers into ice composites has a weak effect on the quantitative dynamics of heat transfer processes, making the rate of freezing/thawing front propagation to be similar in different samples at comparable temperatures of the process. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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