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Processing-structure-microscale properties of silicon nitride
http://hdl.handle.net/10131/0002001045
http://hdl.handle.net/10131/0002001045a87a9bbc-8398-4755-946c-35ed07260747
| 名前 / ファイル | ライセンス | アクション |
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1-s2.0-S0955221924005454-main.pdf (3.2 MB)
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Supplemental Data.docx (626 KB)
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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 | Processing-structure-microscale properties of silicon nitride | |||||||
| 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 | |||||||
| 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 |
Ohji, Tatsuki
× Ohji, Tatsuki
ORCID
0000-0002-4880-9138
× Tatami, Junichi |
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | This paper presents an overview of recent works on microscale mechanical and other properties of silicon nitride (Si3N4) determined by microcantilever bending tests and their relationships with the processing and microstructures. We first focus on deformation behaviors and fracture strength of Si3N4 single crystals. β-Si3N4 single crystals are plastically deformed at room temperature under high bending stress, and the yield stress depends on the crystal orientation. The critical resolved share stress of the primary slip system is determined to be below 1.5 GPa from the yield stress. Next, we address microscale mechanical properties of Si3N4 polycrystalline ceramics. Emphasis is placed on their grain-boundary strength or toughness in conjunction with intergranular glassy film (IGF) which is determined by processing parameters such as sintering additives. Assessment is made on two cases of fractures at the IGF-grain interface and that within the IGF, and in each of the cases, effects of rare earth oxide additives are discussed. In Si3N4 ceramics doped with Al2O3, β-SiAlON layer forming on β-Si3N4 grains enhances the microscale grain-boundary strength. Finally, we shed light on microscale property-degradation behaviors of Si3N4 ceramics, including the deterioration due to the contact with molten Al and the corrosion in sulfuric acid solution. The variation of the microscale properties appears in very short periods compared to the macroscale approaches, demonstrating the advantage in terms of rapid assessment of time-dependent degradation behaviors. | |||||||
| 言語 | en | |||||||
| 書誌情報 |
en : Ceramics International 巻 50, 号 19, Part C, p. 37282-37290, ページ数 9, 発行日 2024-10-01 |
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| ISSN | ||||||||
| 収録物識別子タイプ | EISSN | |||||||
| 収録物識別子 | 18733956 | |||||||
| 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.ceramint.2024.04.238 | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | P | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_fa2ee174bc00049f | |||||||
| 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 | |||||||
