High-temperature stability of (Gd1-xCex)2Zr2O7+x(x=0-1) synthesized by spray pyrolysis in air

被引：2
|
作者：
Wang, Xin [1 ]
Xue, Min [1 ]
Liu, Songbai [1 ]
Jiang, Kuo [1 ]
机构：
[1] Southwest Univ Sci & Technol, Dept Def Sci & Technol, Mianyang 621010, Peoples R China
来源：
JOURNAL OF NUCLEAR MATERIALS | 2019年 / 514卷
关键词：
Gd1-xCex)(2)Zr2O7+x ceramic; Immobilization; Pyrochlore; Cerium; Gadolinium; NUCLEAR-WASTE; CRUCIAL ROLE; PYROCHLORE; PLUTONIUM; PHASES; IMMOBILIZATION; ZIRCONATE; GD2ZR2O7; CONDUCTIVITY; SOLUBILITY;
D O I：
10.1016/j.jnucmat.2018.11.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, (Gd1-xCex)(2)Zr2O7+x immobilized matrices with high cerium (Ce) amount-of-substance fractions (up to 90%) were prepared by sol-spray pyrolysis, and then sintered at 1600 degrees C in air. XRD results showed that all samples were in a mixture of pyrochlore and fluorite phase, even after sintering at 1600 degrees C. All the sintered bulks were dense, and the densities were independent of the additive content. The SEM results showed that all samples were chemically homogeneous. There was no segregation in the grain boundary. EDS quantification yielded a mean composition close to the stoichiometric chemical composition. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：148 / 153
页数：6
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