Published July 1, 2008 | Version v1
Journal article Metadata-only

Compactibility and sintering behavior of nanocrystalline (Th1-xCex)O2 powders synthesized by co-precipitation process

Creators

  • 1. Kocaeli University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, TR-41380 Kocaeli (Turkey)
  • 2. Institute for Energy Research and Reaktor Technology, Research Centre Juelich, D-52425 Juelich (Germany)
  • 3. Institute of Mineral Engineering - Ceramic, Glass, Refractory and Building Materials - of RWTH Aachen, D-52064 Aachen (Germany)

Description

Thoria (ThO2) based ceramic material is a versatile and very important matrix for immobilization of plutonium and other tetravalent actinides either as a burning or a deposition material for final disposal. The aim of this study was to investigate the influence of the actinide concentration (simulated with cerium), the fabrication conditions and the properties of the produced powders on the compactibility and sinterability of the final products. The (Th1-xCex)O2 powders with ceria concentration varying from 5 to 50 mol% were synthesized by co-precipitation method. The pellets were then compacted from calcined and ground powders at pressures varying from 250 to 750 MPa. The produced pellets had a homogenous grain size and sintered densities of 0.88% to 0.95% TD, respectively

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jnucmat.2008.02.093

Additional details

Identifiers

DOI
10.1016/j.jnucmat.2008.02.093;
PII
S0022-3115(08)00198-0;

Publishing Information

Journal Title
Journal of Nuclear Materials
Journal Volume
377
Journal Issue
2
Journal Page Range
p. 396-400
ISSN
0022-3115
CODEN
JNUMAM

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40002205
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CERAMICS; CERIUM OXIDES; COPRECIPITATION; CRYSTALS; DEPOSITION; GRAIN SIZE; NANOSTRUCTURES; PELLETS; PLUTONIUM; SIMULATION; SINTERING; THORIUM OXIDES
Descriptors DEC
ACTINIDE COMPOUNDS; ACTINIDES; CERIUM COMPOUNDS; CHALCOGENIDES; ELEMENTS; FABRICATION; METALS; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; PRECIPITATION; RARE EARTH COMPOUNDS; SEPARATION PROCESSES; SIZE; THORIUM COMPOUNDS; TRANSURANIUM ELEMENTS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.