Kinetic study on the grain growth of PuO2 nanocrystals
| Autor: | Karin Popa, Marco Cologna, Olaf Walter, Daniel Bouëxière |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Surface diffusion
Materials science General Chemical Engineering Analytical chemistry 02 engineering and technology General Chemistry Activation energy Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology Kinetic energy 01 natural sciences Isothermal process 0104 chemical sciences Grain growth Nanocrystal Crystallite 0210 nano-technology |
| Zdroj: | RSC Advances. 9:6542-6547 |
| ISSN: | 2046-2069 |
| Popis: | Kinetic measurements on the grain growth of PuO2 nano-crystals are presented. On the basis of isothermal XRD measurements at temperatures of 820 °C, 900 °C, 1000 °C, and 1100 °C the activation energy for the crystallite growth of PuO2 nanopowder is determined as 351(5) kJ mol−1 in the temperature range from 820 to 1000 °C. Modelling shows that in this T range growth happens likely through surface diffusion. |
| Databáze: | OpenAIRE |
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