Publication detail

A Feasibility study of using of CeO2 as a surrogate material during investigation of UO2 thermal conductivity enhancement

ROLEČEK, J. FORAL, Š. KATOVSKÝ, K. SALAMON, D.

Original Title

A Feasibility study of using of CeO2 as a surrogate material during investigation of UO2 thermal conductivity enhancement

English Title

A Feasibility study of using of CeO2 as a surrogate material during investigation of UO2 thermal conductivity enhancement

Type

journal article in Web of Science

Language

en

Original Abstract

possible substitution of UO2 for research purposes is the cerium dioxide (CeO2) owing to its chemical and physical properties. Neutronic properties are different and fission is absent in the case of CeO2; however, similarities were studied recently to have a possibility to compare the neutronic influence of secondary additives into the matrix. This paper deals with increasing the thermal conductivity of UO2 nuclear fuel on surrogate material (CeO2); the main focus of the research is given on the sintering behaviour of CeO2. The incorporation of highly thermally conductive material (SiC) is the investigated concept of thermal conductivity enhancement. Conventional sintering and spark plasma sintering (SPS) were applied to compare the behaviour of CeO2 and UO2 reported in the literature. High temperature thermal conductivity measurements did not confirm the positive influence of SiC additive inside the CeO2 matrix mainly due to grain boundary disruptions. Similar behaviour was also previously reported for UO2 pellets with SiC.

English abstract

possible substitution of UO2 for research purposes is the cerium dioxide (CeO2) owing to its chemical and physical properties. Neutronic properties are different and fission is absent in the case of CeO2; however, similarities were studied recently to have a possibility to compare the neutronic influence of secondary additives into the matrix. This paper deals with increasing the thermal conductivity of UO2 nuclear fuel on surrogate material (CeO2); the main focus of the research is given on the sintering behaviour of CeO2. The incorporation of highly thermally conductive material (SiC) is the investigated concept of thermal conductivity enhancement. Conventional sintering and spark plasma sintering (SPS) were applied to compare the behaviour of CeO2 and UO2 reported in the literature. High temperature thermal conductivity measurements did not confirm the positive influence of SiC additive inside the CeO2 matrix mainly due to grain boundary disruptions. Similar behaviour was also previously reported for UO2 pellets with SiC.

Keywords

CeO2; SiC; nuclear fuel; surrogate material; thermal conductivity enhancement; spark plasma sintering

Released

03.04.2017

Publisher

Taylor & Francis

ISBN

1743-6753

Periodical

Advances in Applied Ceramics

Year of study

115

Number

8

State

GB

Pages from

123

Pages to

131

Pages count

9

Documents

BibTex


@article{BUT130018,
  author="Jakub {Roleček} and Štěpán {Foral} and Karel {Katovský} and David {Salamon}",
  title="A Feasibility study of using of CeO2 as a surrogate material during investigation of UO2 thermal conductivity enhancement",
  annote="possible substitution of UO2 for research purposes is the cerium dioxide (CeO2) owing to its
chemical and physical properties. Neutronic properties are different and fission is absent in the case of CeO2; however, similarities were studied recently to have a possibility to compare the neutronic influence of secondary additives into the matrix. This paper deals with increasing the thermal conductivity of UO2 nuclear fuel on surrogate material (CeO2); the main focus of the research is given on the sintering behaviour of CeO2. The incorporation of highly thermally conductive material (SiC) is the investigated concept of thermal conductivity
enhancement. Conventional sintering and spark plasma sintering (SPS) were applied to compare the behaviour of CeO2 and UO2 reported in the literature. High temperature thermal conductivity measurements did not confirm the positive influence of SiC additive inside the CeO2 matrix mainly due to grain boundary disruptions. Similar behaviour was also previously reported for UO2 pellets with SiC.",
  address="Taylor & Francis",
  chapter="130018",
  doi="10.1080/17436753.2016.1264122",
  institution="Taylor & Francis",
  number="8",
  volume="115",
  year="2017",
  month="april",
  pages="123--131",
  publisher="Taylor & Francis",
  type="journal article in Web of Science"
}