Spark plasma sintering of iodine-bearing apatite

被引：53

作者：

Le Gallet, S. ^{[1
]}

Campayo, L. ^{[2
]}

Courtois, E. ^{[2
]}

Hoffmann, S. ^{[3
]}

Grin, Yu. ^{[3
]}

Bernard, F. ^{[1
]}

Bart, F. ^{[2
]}

机构：

[1] UMR 5209 CNRS UB, Lab Interdisciplinaire Carnot Bourgogne, F-21078 Dijon, France

[2] CEA, DEN, DTCD SECM LDMC, F-30207 Bagnols Sur Ceze, France

[3] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2010年 / 400卷 / 03期

关键词：

TEMPERATURE;

D O I：

10.1016/j.jnucmat.2010.03.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high chemical durability of iodine-bearing apatite makes it strongly prospective for conditioning of radioactive iodine. The synthesis and consolidation of iodine-bearing compounds require low temperatures to avoid iodine volatilization. Spark plasma sintering therefore appears to be a suitable process because of its shorter treatment time and lower sintering temperature compared with other processes such as HUP or HIP. Two alternatives were examined: SPS sintering of iodine-bearing apatite powder and SPS reacting of a stoichiometric lead iodide and lead phosphovanadate powder mixture. The degree of densification and the microstructure of bulk materials in both cases are described and compared. Reactive sintering appears to involve a three-stage mechanism: (i) Pbl(2) coalescence, (ii) solid-state iodoapatite synthesis and consolidation and, (iii) iodoapatite consolidation in the presence of a liquid phase. The SPS reacted products reveal the finest and most homogeneous microstructure, and a density exceeding 96%. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：251 / 256

页数：6

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