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Accident-tolerant hybrid ceramics for fusion breeding blanket
https://repo.qst.go.jp/records/2001610
https://repo.qst.go.jp/records/2001610cf4c1b02-f9d8-4ecf-a2d2-8a90caefa03d
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2025-04-22 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Accident-tolerant hybrid ceramics for fusion breeding blanket | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| 著者 |
Keisuke MUKAI
× Keisuke MUKAI
× Taehyun Hwang
× Minoru KUSADA
× Jaehwan Kim
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | In a water-cooled ceramic breeding blanket for fusion reactors, hydrogen gas generation by steam oxidation of metallic Be compounds (i.e. neutron multiplier) in a loss-of-coolant accident (LOCA) raises major safety concerns. Li?Be hybrid ceramics has a potential to reduce hydrogen generation significantly, however, the stable compositions and structures for quaternary compositions have not been comprehensively understood. Herein, we report machinelearning based prediction, synthesis, structure, and properties of chemically stabile two-phase Li?Be?X?O hybrid ceramics. The steam exposure tests demonstrated a negligibly small H2 generation from the two-phase powder of Li2BeSiO4 and 5 at.% BeO below 1200 ℃. The stability is explained by the intrinsic ionic/covalent bonding characters and little capacity for further oxidation by steam. Neutronic calculations with simplified one-dimensional model show that the two-phase hybrid cermaics has a sufficient tritium breeding capability without having metallic Be-based multiplier in the blanket. The hybrid ceramics is the first example of multi-functional oxide to breed sufficient fuel tritium with no metallic neutron multiplier, which allows a novel design of ceramic breeding blanket with enhanced safety margins during in-box LOCA. |
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| 書誌情報 |
Materials & Design 発行日 2025-04 |
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| 出版者 | ||||||||||||||
| 出版者 | ELSEVIER | |||||||||||||
| DOI | ||||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | 10.1016/j.matdes.2025.113964 | |||||||||||||
