Title: Simulated UO2 fuel containing CsI by Spark Plasma Sintering
Authors: WANGLE TADEASTYRPEKL VACLAVCOLOGNA MARCOSOMERS Joseph
Citation: JOURNAL OF NUCLEAR MATERIALS vol. 466 p. 150-153
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2015
JRC N°: JRC95508
ISSN: 0022-3115
URI: http://www.sciencedirect.com/science/article/pii/S0022311515301161
http://publications.jrc.ec.europa.eu/repository/handle/JRC95508
DOI: 10.1016/j.jnucmat.2015.07.030
Type: Articles in periodicals and books
Abstract: Herein, an innovative preparation procedure has been deployed enabling, for the first time, the incorporation of volatile fission product simulant into highly dense nuclear fuel pellets. Highly volatile fission products were embedded in a dense UO2 matrix in the form of CsI by simply mixing starting materials and consolidation in a Spark Plasma Sintering step at 1000°C with a 5 minutes dwell time. CsI particles were evenly distributed throughout the pellet and were located at the grain boundaries. The sintering rate is dependent on the O/U ratio of the powder. Addition of CsI also acts as a sintering aid, reducing the temperature of maximum densification.
JRC Directorate:Nuclear Safety and Security

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