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Anomalous oxidation behavior in a zirconium beryllium intermetallic compound
https://repo.qst.go.jp/records/76371
https://repo.qst.go.jp/records/76371fa1bdee0-1e4e-4b58-af99-401606a66dff
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-07-29 | |||||
| タイトル | ||||||
| タイトル | Anomalous oxidation behavior in a zirconium beryllium intermetallic compound | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kim, Jaehwan
× Kim, Jaehwan× Nakamichi, Masaru× Kim, Jaehwan× Nakamichi, Masaru |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Beryllium intermetallic compounds (beryllides) are well-known refractory and functional materials for fission and fusion applications, specifically as reflectors and multipliers. For advanced neutron multipliers, our research group has investigated many kinds of beryllides. Due to its nuclear properties, single phase Be13Zr beryllide was selected and successfully fabricated via plasma sintering of the homogenized Be13Zr powder. Its reactivity against 15% H2O was evaluated, and unexpected catastrophic oxidation (pest reaction) occurred at a low temperature range, from 973 to 1123 K, leading to the disintegration into a powder. This is caused by the intergranular degradation on the boundaries between the oxide layer and the matrix, as well as the continuous oxidation through cracks that arise from stress generation on the oxides. However, this pest reaction was suppressed by Si doping. Si likely relieves the stress near the grain boundary and in the oxide layer. The Si-doped Be13Zr had the lowest hydrogen generation rate among the evaluated samples at 1273 and 1473 K, which is also much lower by approximately two or three orders of magnitude than that of Be at 1273 K. | |||||
| 書誌情報 |
Journal of Nuclear Materials 巻 519, p. 182-187, 発行日 2019-07 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0022-3115 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.jnucmat.2019.03.042 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0022311518316659 | |||||
