Phase equilibria of CaTiO3 doped with Ce, Nd and U

被引：17

作者：

Hanajiri, Y ^{[1
]}

Yokoi, H ^{[1
]}

Matsui, T ^{[1
]}

Arita, Y ^{[1
]}

Nagasaki, T ^{[1
]}

Shigematsu, H ^{[1
]}

机构：

[1] NAGOYA UNIV, GRAD SCH ENGN, DEPT QUANTUM ENGN, CHIKUSA KU, NAGOYA, AICHI 46401, JAPAN

来源：

JOURNAL OF NUCLEAR MATERIALS | 1997年 / 247卷

关键词：

D O I：

10.1016/S0022-3115(97)00055-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The solubility limits of Ce, Nd and U in CaTiO3, one of the promising host matrix for fixation of lanthanide and actinide elements, were determined by X-ray diffraction to be between 20 and 30 mol%, between 20 and 30 mol% and between 0 and 3 mol%, respectively. By substituting Al to Ti in CaTiO3, the solubility limit of U in CaTiO3 increased to be between 5 and 7.5 mol%. The thermogravimetric analyses of (Ca0.80Ce0.20)TiO3+y was carried out at 1273 K and 1373 K in the oxygen partial pressure range of 10(-14)-10(-6) Pa. In the higher oxygen partial pressure region, the sample of single CaTiO3 phase decomposed into three phases consisting of perovskite phase, CeO2 and TiO2. (C) 1997 Elsevier Science B.V.

引用

页码：285 / 288

页数：4

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