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High-temperature stability of (Gd1−xCex)2Zr2O7+x (x = 0–1) synthesized by spray pyrolysis in air
Journal of Nuclear Materials ( IF 3.1 ) Pub Date : 2018-11-22 , DOI: 10.1016/j.jnucmat.2018.11.025
Xin Wang , Min Xue , Songbai Liu , Kuo Jiang

In this paper, (Gd1−xCex)2Zr2O7+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 °C in air. XRD results showed that all samples were in a mixture of pyrochlore and fluorite phase, even after sintering at 1600 °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.



中文翻译:

 空气中喷雾热解合成的(Gd 1− x Ce x2 Zr 2 O 7+ xx = 0–1)的高温稳定性

本文通过溶胶-喷雾热解法制备了高铈(Ce)量级分(最高90%)的(Gd 1- x Ce x2 Zr 2 O 7+ x固定化基质,然后进行烧结。在1600°C的空气中。XRD结果表明,即使在1600°C烧结后,所有样品均处于烧绿石和萤石相的混合物中。所有的烧结块都是致密的,并且密度与添加剂的含量无关。SEM结果表明,所有样品都是化学均质的。晶界没有偏析。EDS定量得到接近化学计量化学组成的平均组成。

更新日期:2018-11-22
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