Simulated UO2 fuel containing CsI by spark plasma sintering

被引：28

作者：

Wangle, T. ^{[1
,2
]}

Tyrpekl, V. ^{[1
]}

Cologna, M. ^{[1
]}

Somers, J. ^{[1
]}

机构：

[1] Commiss European Communities, JRC, Inst Transuranium Elements ITU, D-76125 Karlsruhe, Germany

[2] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague 1, Czech Republic

来源：

JOURNAL OF NUCLEAR MATERIALS | 2015年 / 466卷

关键词：

UO2; CsI; Cesium; Iodine; Volatile fission products; Simfuel; Separate effect studies; Spark plasma sintering; SPS; Nuclear fuel safety; URANIUM-DIOXIDE; THERMAL-CONDUCTIVITY; ACTIVATION-ENERGY; SIMFUEL; DISSOLUTION; GROWTH; SPS;

D O I：

10.1016/j.jnucmat.2015.07.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees C with a 5 min 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. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：150 / 153

页数：4

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