部分无序焦绿盐:重结晶和脱水的时间-温度依赖性

IF 0.9 4区材料科学 Q3 CRYSTALLOGRAPHY

Zeitschrift Fur Kristallographie-Crystalline Materials Pub Date : 2022-06-14 DOI:10.1515/zkri-2022-0006

T. Beirau, C. Reissner, H. Pöllmann, U. Bismayer

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引用次数: 0

摘要

摘要:比较辐射损伤焦绿石(~ 35%非晶态部分;1.8 wt% ThO2)提供了对再结晶行为的时间-温度依赖性的见解。特别是与原子间成键直接相关的弹性模量，可以与非晶分数的数量相关联。由此可以推断出退火时间对渗滤行为的显著影响。演化气分析表明在构造重组过程中存在脱水作用。

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Partially disordered pyrochlore: time-temperature dependence of recrystallization and dehydration

Abstract The comparison of the evolution of the mechanical properties (elastic modulus and hardness) after step-wise thermal annealing for 1 and 16 h up to 900 K of a radiation-damaged pyrochlore (∼35% amorphous fraction; 1.8 wt% ThO2) provides insights to the time-temperature dependence of the recrystallization behavior. Especially the elastic modulus, directly related to interatomic bonding, enables the correlation with the amount of amorphous fraction. From this a pronounced effect of the annealing time on percolation behavior could be deduced. Evolved gas analysis indicate dehydration in the course of the structural reorganization process.

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来源期刊

Zeitschrift Fur Kristallographie-Crystalline Materials CRYSTALLOGRAPHY-

CiteScore

2.00

自引率

16.70%

发文量

期刊介绍： Zeitschrift für Kristallographie – Crystalline Materials was founded in 1877 by Paul von Groth and is today one of the world’s oldest scientific journals. It offers a place for researchers to present results of their theoretical experimental crystallographic studies. The journal presents significant results on structures and on properties of organic/inorganic substances with crystalline character, periodically ordered, modulated or quasicrystalline on static and dynamic phenomena applying the various methods of diffraction, spectroscopy and microscopy.