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French Studies on the Development of Potential Conditioning Matrices for Iodine 129

Published online by Cambridge University Press:  23 March 2015

Lionel Campayo ,
Fabienne Audubert ,
Jean-Eric Lartigue ,
Eglantine Courtois-Manara ,
Sophie Le Gallet ,
Frédéric Bernard ,
Thomas Lemesle ,
François O. Mear ,
Lionel Montagne  and
Antoine Coulon
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Lionel Campayo
Affiliation:
CEA, DEN, DTCD, Bagnols-sur-Cèze, F-30207, France.
Fabienne Audubert
Affiliation:
CEA, DEN, DEC, Saint Paul Lez Durance, F-13108, France.
Jean-Eric Lartigue
Affiliation:
CEA, DEN, DTN, Saint Paul Lez Durance, F-13108, France.
Eglantine Courtois-Manara
Affiliation:
Electron Microscopy Spectroscopy Laboratory, Karlsruhe Institute of Technology, P.O. Box 3640, Karlsruhe, D-76021, Germany.
Sophie Le Gallet
Affiliation:
LICB, UMR-6303, 9 av. A. Savary, Dijon, BP 47870, F-21078, France.
Frédéric Bernard
Affiliation:
LICB, UMR-6303, 9 av. A. Savary, Dijon, BP 47870, F-21078, France.
Thomas Lemesle
Affiliation:
CEA, DEN, DTCD, Bagnols-sur-Cèze, F-30207, France.
François O. Mear
Affiliation:
UCCS, UMR-8181, Université Lille 1, Villeneuve d’Ascq, F-59655, France.
Lionel Montagne
Affiliation:
UCCS, UMR-8181, Université Lille 1, Villeneuve d’Ascq, F-59655, France.
Antoine Coulon
Affiliation:
CEA, DEN, DTCD, Bagnols-sur-Cèze, F-30207, France.
Danielle Laurencin
Affiliation:
ICGM, UMR-5253, Université de Montpellier 2, Place Eugène Bataillon, CC1701, Montpellier, F-34095, France.
Agnès Grandjean
Affiliation:
CEA, DEN, DTCD, Bagnols-sur-Cèze, F-30207, France.
Sylvie Rossignol
Affiliation:
GEMH, ENSCI, Centre Européen de la Céramique, 12 rue Atlantis, Limoges, F-87068, France.
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Abstract

Since 1991, in France, studies on the conditioning of iodine were carried out to assess the potential of several specific inorganic host matrices. The apatite family has been mainly studied because of its good chemical durability and its ability to confine iodine over geological time scales. A lead-bearing apatite, Pb10(VO4)4.8(PO4)1.2I2, and a calcium-bearing apatite, Ca10(PO4)6(OH)2-x(IO3)x, were selected on the basis of their incorporation rate (between 7 and 10 wt.%) and a satisfactory resistance to leaching (V0(50 °C, pure water) ∼ 10-2 g.m-2.d-1; Vr(50 °C, pure water) < 10-4 g.m-2.d-1). However, with such materials, the removal of open porosity requires non conventional sintering techniques like spark plasma sintering to decrease the surface exposed to water. This is why, in parallel, other matrices, like silver phosphate glasses, have also been investigated. To improve the chemical durability and thermal properties of these glasses, cross-linking reagents were added to their formulation.

Keywords

Ipowder metallurgysurface reaction
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1744: Symposium EE – Scientific Basis for Nuclear Waste Management XXXVIII , 2015 , pp. 15 - 20
Copyright
Copyright © Materials Research Society 2015 

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References

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