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Fabrication and tritium release property of Li2TiO3-Li4SiO4 biphasic ceramics
Journal of Nuclear Materials ( IF 3.1 ) Pub Date : 2018-02-23 , DOI: 10.1016/j.jnucmat.2018.02.036
Mao Yang , Guangming Ran , Hailiang Wang , Chen Dang , Zhangyi Huang , Xiaojun Chen , Tiecheng Lu , Chengjian Xiao

Li2TiO3-Li4SiO4 biphasic ceramic pebbles have been developed as an advanced tritium breeder due to the potential to combine the advantages of both Li2TiO3 and Li4SiO4. Wet method was developed for the pebble fabrication and Li2TiO3-Li4SiO4 biphasic ceramic pebbles were successfully prepared by wet method using the powders synthesized by hydrothermal method. The tritium release properties of the Li2TiO3-Li4SiO4 biphasic ceramic pebbles were evaluated. The biphasic pebbles exhibited good tritium release property at low temperatures and the tritium release temperature was around 470 °C. Because of the isotope exchange reaction between H2 and tritium, the addition of 0.1%H2 to purge gas He could significantly enhance the tritium gas release and the fraction of molecular form of tritium increased from 28% to 55%. The results indicate that the Li2TiO3-Li4SiO4 biphasic ceramic pebbles fabricated by wet method exhibit good tritium release property and hold promising potential as advanced breeder pebbles.



中文翻译:

Li 2 TiO 3 -Li 4 SiO 4双相陶瓷的制备及release释放性能

Li 2 TiO 3 -Li 4 SiO 4双相陶瓷小卵石已被开发为先进的breed育种剂,这是因为它具有将Li 2 TiO 3和Li 4 SiO 4的优点相结合的潜力。研制了湿法制备卵石,并利用水热法合成的粉末,通过湿法成功制备了Li 2 TiO 3 -Li 4 SiO 4双相陶瓷卵石。Li 2 TiO 3 -Li 4 SiO 4的release释放特性评价了双相陶瓷卵石。双相卵石在低温下表现出良好的tri释放性能,and释放温度约为470°C。由于H 2和tri之间的同位素交换反应,向吹扫气体He中添加0.1%H 2可以显着提高the气体的释放,and的分子形式分数从28%增加到55%。结果表明,湿法制备的Li 2 TiO 3 -Li 4 SiO 4双相陶瓷卵石具有良好的release释放性能,具有作为高级种卵的潜力。

更新日期:2018-02-23
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