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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Long-term thermal stability of two-phased lithium orthosilicate/metatitanate ceramics
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Long-term thermal stability of two-phased lithium orthosilicate/metatitanate ceramics

机译:双相锂外硅酸锂/甲状腺酸盐陶瓷的长期热稳定性

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摘要

The long-term thermal stability of advanced ceramic breeder pebbles consisting of lithium orthosilicate (Li4SiO4) and additions of lithium metatitanate (Li2TiO3) was tested in an annealing experiment at 900 degrees C for up to 128 days. Different gas atmospheres were used to test the influence of moisture in the purge gas. Li4SiO4 pebbles including nominally 25, 30, and 35 mol% Li2TiO3 were investigated with regard to their chemical composition, microstructure, porosity, and mechanical properties after predetermined time intervals and at the end of the experiment. No lithium loss and no secondary phases were detected. The microstructures, porosities and mechanical stabilities did not show significant changes over time. Moreover, moisture in the purge gas atmosphere has no negative influence on the material properties. (C) 2018 EURATOM. Published by Elsevier B.V. All rights reserved.
机译:在退火实验中,在900℃下在900℃下测试高达128天,通过锂外硅酸锂(Li4SiO4)组成的高级陶瓷种植卵石的长期热稳定性和锂硝酸锂(Li2TiO3)。 使用不同的气体环境来测试吹扫气体中的水分的影响。 在预定时间间隔和实验结束时,研究了包括标称25,30和35mol%的Li2TiO3的Li4SiO4卵石,包括化学成分,微观结构,孔隙率和机械性能。 没有检测锂损失,没有次生阶段。 微观结构,孔隙率和机械稳定性随着时间的推移没有显着变化。 此外,吹扫气体气氛中的水分对材料特性没有负面影响。 (c)2018欧元。 由elsevier b.v出版。保留所有权利。

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