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Kinetic study on the grain growth of PuO₂ nanocrystals.

ABSTRACT: 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.

SUBMITTER: Bouexiere D

PROVIDER: S-EPMC9060958 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Kinetic study on the grain growth of PuO2 nanocrystals.

Bouëxière Daniel D Popa Karin K Walter Olaf O Cologna Marco M

RSC advances 20190225 12

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. ...[more]

PMID: 35518472

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