Synthesis of UO2 and ThO2 doped with Gd2O3

被引：15

作者：

Baena, Angela ^{[1
,2
]}

Cardinaels, Thomas ^{[2
]}

Vos, Benedict ^{[2
]}

Binnemans, Koen ^{[1
]}

Verwerft, Marc ^{[2
]}

机构：

[1] Katholieke Univ Leuven, Dept Chem, B-3001 Heverlee, Belgium

[2] Belgian Nucl Res Ctr SCK CEN, Inst Nucl Mat Sci, B-2400 Mol, Belgium

来源：

JOURNAL OF NUCLEAR MATERIALS | 2015年 / 461卷

关键词：

TH(1-X)LN(X)O(2-X/2) MIXED-OXIDES; THERMAL-CONDUCTIVITY; SOLID-SOLUTIONS; ELECTRICAL-CONDUCTIVITY; URANIUM-DIOXIDE; PHASE-RELATIONS; ZRO2; POWDER; FUEL; SYSTEMS; THORIA;

D O I：

10.1016/j.jnucmat.2015.03.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Uranium dioxide (urania, UO2) and thorium dioxide (thoria, ThO2) doped with gadolinium oxide (gadolinia, Gd2O3) were prepared via solid-state synthesis. For Gd2O3-doped ThO2, also an alternative, semi-dry process ("suspension coating") was applied in which Gd2O3-coated ThO2 powder was produced via suspension drying followed by calcination. The microstructure and homogeneity of the materials were investigated by ceramography, EPMA and XRD. Solid-state synthesis is a convenient method to produce Gd2O3-doped UO2. However, this route was found to be inappropriate to obtain Gd2O3-doped ThO2 with an acceptable microstructure and homogeneity. The suspension coating process reported in this work is a simple and practical method to overcome these issues. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：271 / 281

页数：11

共 49 条

[1] Thermochemistry of Lanthana- and Yttria-Doped Thoria [J].

Aizenshtein, Michael ;

Shvareva, Tatiana Y. ;

Navrotsky, Alexandra .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2010, 93 (12) :4142-4147

[2]

[Anonymous], 2004, IAEATECDOC1416

[3] Preparation of 15 mol% YO1.5-doped ThO2 disk electrolytes by a polymeric gel-combustion method [J].

Antony, SA ;

Nagaraja, KS ;

Sreedharan, OM .

JOURNAL OF NUCLEAR MATERIALS, 2001, 295 (2-3) :189-192

[4] SURVEY OF BINARY OXIDE FUEL MANUFACTURING AND QUALITY-CONTROL [J].

ASSMANN, H ;

PEEHS, M ;

ROEPENACK, H .

JOURNAL OF NUCLEAR MATERIALS, 1988, 153 :115-126

[5] UBER HETEROTYPE MISCHPHASEN BEI SELTENERDOXYDEN .1. [J].

BRAUER, G ;

GRADINGER, H .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1954, 276 (5-6) :209-226

[6] Dopant solubility and lattice contraction in gadolinia and gadolinia-chromia doped UO2 fuels [J].

Cardinaels, T. ;

Hertog, J. ;

Vos, B. ;

de Tollenaere, L. ;

Delafoy, C. ;

Verwerft, M. .

JOURNAL OF NUCLEAR MATERIALS, 2012, 424 (1-3) :289-300

[7] Effect of Al and Ce doping on the deformation upon sintering in sequential tape cast layers for solid oxide fuel cells [J].

Cologna, M. ;

Contino, A. R. ;

Montinaro, D. ;

Sglavo, V. M. .

JOURNAL OF POWER SOURCES, 2009, 193 (01) :80-85

[8] Powder synthesis and sintering of high density thoria-yttria ceramics [J].

Cosentino, IC ;

Muccillo, R .

JOURNAL OF NUCLEAR MATERIALS, 2002, 304 (2-3) :129-133

[9] Properties of thoria-yttria solid electrolytes prepared by the citrate technique [J].

Cosentino, IC ;

Muccillo, R .

MATERIALS LETTERS, 1997, 32 (5-6) :295-300

[10]

Das D, 2013, GREEN ENERGY TECHNOL, P1, DOI 10.1007/978-1-4471-5589-8

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