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Effects of rare-earth oxides on grain boundary strength of silicon nitride ceramics
http://hdl.handle.net/10131/0002001044
http://hdl.handle.net/10131/0002001044d41b1359-054a-4a1b-b643-be56505a6f97
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
1-s2.0-S0955221924005454-main.pdf (3.2 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2024-07-24 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Effects of rare-earth oxides on grain boundary strength of silicon nitride ceramics | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Silicon nitride, Grain boundary, Microscale, Fracture strength, Rare earth | |||||||||||
| 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 | open access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| 著者 |
Matsuura, Komaki
× Matsuura, Komaki
× Ohji, Tatsuki
ORCID
0000-0002-4713-460X
× Takahashi, Takuma
× Iijima, Motoyuki× Tatami, Junichi |
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | This study investigates the grain boundary (GB) strengths for Si3N4 ceramics doped with 3 wt% RE2O3 (RE = Y, La, or Lu) and 7 wt% MgO, using microcantilever beam specimens having different misorientation angles of the two adjacent grains. The measured strengths are so high that they are comparable to the theoretical strength of the intergranular glassy film (IGF). They are also widely scattered with a Weibull modulus of 3.0. The strength depends on the type of RE2O3 and increases in order of Y<La<Lu. It is suggested that the fracture occurs from the IGF/Si3N4 interfaces rather than within the IGF, and that O anions, which reside within the IGF and do not dissolve into the β-Si3N4 crystal lattice because of the high cationic field strength, reduce the IGF/grain interface strength. The GB strength also little depends on the misorientation angles, which is discussed in relation with the IGF accommodation ability of mismatch. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
en : Journal of the European Ceramic Society 巻 44, 号 14, ページ数 9, 発行日 2024-06-24 |
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| ISSN | ||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||
| 収録物識別子 | 1873619X | |||||||||||
| DOI | ||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | https://doi.org/10.1016/j.jeurceramsoc.2024.116672 | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Elsevier | |||||||||||
| 言語 | en | |||||||||||
| 助成情報 | ||||||||||||
| 助成機関識別子タイプ | e-Rad_funder | |||||||||||
| 助成機関識別子タイプURI | https://www.e-rad.go.jp/datasets/files/haibunkikan.csv | |||||||||||
| 助成機関識別子 | 1020 | |||||||||||
| 助成機関名 | Japan Science and Technology Agency (JST) | |||||||||||
| 言語 | en | |||||||||||
| 研究課題番号URI | https://projectdb.jst.go.jp/grant/JST-PROJECT-21460437/ | |||||||||||
| 研究課題番号 | JPMJCR2192 | |||||||||||
| 研究課題番号タイプ | JGN | |||||||||||
| 研究課題名 | 劣化の学理に基づくセラミックスの信頼性革新 | |||||||||||
| 言語 | ja | |||||||||||
