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Preparation of UCO Microspheres by Internal Gelation Process

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Abstract:

UCO kernels were used for High Temperature Reactor (HTR) fuel, which can restrain kernels migration and avoid corrosion of cladding layer under the high burnup compared with UO2 or UC kernels. In this paper, UCO kernels were prepared by internal gelation process containing dissolving, broth preparation, dispersing, AWD (aging, washing and drying) and sintering procedures. The broth composition was studied based on the fabrication of UO2 kernels before. Effects of the carbon black content and sintering atmosphere on the microstructure and performance of microspheres were mainly studied. Surface morphology of dried microsphere was observed by integrated microscope. Grain size and the degree of densification of UCO microspheres were observed by SEM.

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High-Performance Ceramics IX View Preview

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Periodical:

Key Engineering Materials (Volume 697)

Pages:

831-834

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.831

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Online since:

July 2016

Authors:

Xing Yu Zhao*, Jing Tao Ma, Yong Gao, Shao Chang Hao, Chang Sheng Deng, Bing Liu, Ya Ping Tang

Keywords:

Carbon Black, Internal Gelation, UCO Kernels

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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