Abstract Beryllium intermetallic compounds (beryllides) are known as promising materials for advanced neutron multipliers for fusion applications owing to their high stability and low swelling. Because a large amount of beryllium is used for each solid breeding blanket in fusion reactors, the development of effective and efficient recycling processes is essential. In this study, a proper recycling process of Be12V pebbles was proposed, which combines a plasma sintering and a rotating electrode method for the fabrication of beryllide pebbles. As a result of experiments, it is determined that the rotating electrode method is available to reduce oxygen impurities, whereas the plasma sintering process can eliminate Li impurities and hydrogen isotope depending on sintering temperature. Regarding the recycling process, the beryllide pebbles used can be recycled into rods by plasma sintering, in which Li impurity and tritium can be eliminated. Then, recycled rods can be granulated by the rotating electrode method. During this process, it is anticipated that oxygen impurities and irradiation defects can be eliminated because the rotating electrode method includes the melting process. Thus, the current process was determined to be appropriate as a recycling process for beryllide pebbles.

中文翻译：

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钒铍金属间化合物作为先进中子倍增器用于 DEMO 聚变应用的回收过程

摘要 铍金属间化合物（beryllides）由于其高稳定性和低膨胀性而被认为是用于聚变应用的先进中子倍增器的有前途的材料。由于聚变反应堆中的每个固体增殖毯都使用大量铍，因此开发有效和高效的回收工艺至关重要。在这项研究中，提出了一种适当的 Be12V 鹅卵石回收工艺，该工艺结合等离子体烧结和旋转电极方法来制造铍石卵石。实验结果表明，旋转电极法可用于减少氧杂质，而等离子体烧结工艺可根据烧结温度消除锂杂质和氢同位素。关于回收过程，使用的铍石卵石可以通过等离子烧结回收成棒状，可以去除Li杂质和氚。然后，回收的棒可以通过旋转电极的方法造粒。在此过程中，由于旋转电极法包括熔化过程，因此预计可以消除氧杂质和辐照缺陷。因此，目前的工艺被确定为适合作为铍石卵石的回收工艺。