富含Li-6的双相Li4SiO4-Li2TiO3铕参考氚增殖陶瓷的长期热稳定性

IF 2.7 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2025-04-08 DOI:10.1016/j.nme.2025.101932

Julia Leys, Thomas Bergfeldt, Oliver Leys, Regina Knitter

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引用次数: 0

摘要

在He + 0.1 vol% H2气氛下，在700°C和900°C下退火60天，研究了先进陶瓷增殖剂（ACB）鹅卵石的长期热稳定性。实验选择了四批双相ACB鹅卵石，由Li4SiO4和Li2TiO3添加量分别为30和35 mol%，锂-6含量分别为7.6、60和90 at%组成。在一定的时间间隔后和实验结束时测定材料的化学成分、相含量、显微组织、孔隙率和力学性能等性能。ACB鹅卵石在高温下表现出良好的性能，没有锂的损失，也没有二次相的产生。此外，随着时间的推移，微观结构、孔隙率和机械稳定性没有显着变化。

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Long-term thermal stability of biphasic Li4SiO4-Li2TiO3 EU reference tritium breeder ceramics enriched in Li-6

The long-term thermal stability of Advanced Ceramic Breeder (ACB) pebbles was investigated in an annealing experiment at 700 and 900 °C in He + 0.1 vol% H₂ gas atmosphere for up to 60 days. Four batches of biphasic ACB pebbles, consisting of Li₄SiO₄ with additions of 30 and 35 mol% Li₂TiO₃ and different lithium-6 contents (7.6, 60 and 90 at%) were selected for the experiment. Material properties such as the chemical composition, phase content, microstructure, porosity, and mechanical properties were determined after certain time intervals and at the end of the experiment. The ACB pebbles show good performance under high temperatures as no lithium loss nor secondary phases occur. Furthermore, the microstructure, porosities, and mechanical stabilities did not exhibit significant changes over time.

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来源期刊

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.