In situ synchrotron investigation of grain growth behavior of nano-grained UO2

Miao, Yinbin; Yao, Tiankai; Lian, Jie; Park, Jun-Sang; Almer, Jonathan; Bhattacharya, Sumit; Yacout, Abdellatif M.; Mo, Kun

doi:10.1016/j.scriptamat.2016.12.025

In situ synchrotron investigation of grain growth behavior of nano-grained UO₂

Journal Article · Sun Jan 08 23:00:00 EST 2017 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2016.12.025· OSTI ID:1374576

Miao, Yinbin ^[1]; Yao, Tiankai ^[2]; Lian, Jie ^[2]; Park, Jun-Sang ^[1]; Almer, Jonathan ^[1]; Bhattacharya, Sumit ^[3]; Yacout, Abdellatif M. ^[1]; Mo, Kun ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States)
Rensselaer Polytechnic Inst., Troy, NY (United States)
Northwestern Univ., Evanston, IL (United States)

Here, we report on the study of grain growth kinetics in nano-grained UO₂ samples. Dense nano-grained UO₂ samples with well-controlled stoichiometry and grain size were fabricated using the spark plasma sintering technique. To determine the grain growth kinetics at elevated temperatures, a synchrotron wide-angle X-ray scattering (WAXS) study was performed in situ to measure the real-time grain size evolution based on the modified Williamson-Hall analysis. The unique grain growth kinetics of nanocrystalline UO₂ at 730 °C and 820 °C were observed and explained by the difference in mobility of various grain boundaries.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1374576

Journal Information:: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: C Vol. 131; ISSN 1359-6462

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Kinetic study on the grain growth of PuO ₂ nanocrystals Bouëxière, Daniel; Popa, Karin; Walter, Olaf RSC Advances, Vol. 9, Issue 12 https://doi.org/10.1039/c8ra10430a	journal	January 2019

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Related Subjects

36 MATERIALS SCIENCE
X-ray diffraction
grain growth
nanocrystalline materials
synchrotron radiation
uranium dioxide