種結晶添加により微構造制御された窒化ケイ素焼結体の機械特性

• 平尾 喜代司

  名古屋工業技術研究所

• 長岡 孝明

  名古屋工業技術研究所

• BRITO Manuel E.

  National Industrial Research Institute of Nagoya

• 神崎 修三

  名古屋工業技術研究所

書誌事項

タイトル別名

• Mechanical Properties of Silicon Nitrides with Tailored Microstructure by Seeding
• タネ ケッショウ テンカ ニ ヨリ ビ コウゾウ セイギョサレタ チッカ ケイソ

抄録

The effect of seeding on microstructure development and mechanical properties of silicon nitride was investigated by the use of two kinds of morphologically regulated β-Si₃N₄ single crystal particles. Silicon nitrides with bimodal grain-size distribution were obtained by seeding. The seeding of an appropriate amount of β-Si₃N₄ particles with an appropriate size allowed the development of optimal microstructures, where large elongated grains grown from the seed particles were highly dispersed. As a result, fracture toughness increased retaining the high strength levels of about 1GPa. On the other hand, specimens with large amount of seed particles presented lower strength owing to the coalescence of large elongated grains. The increase in fracture toughness can be associated with diameter as well as volume fraction of well dispersed large β-Si₃N₄ grains, assuming toughening by the bridging mechanism.

収録刊行物

• Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)

  Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 104 (1205), 54-58, 1996

  公益社団法人 日本セラミックス協会

キーワード

• Silicon nitride
• Bimodal microstructure
• Seeding
• Large elongated grain
• Mechanical properties
• Toughening mechanism

詳細情報

• CRID: 1390282680253774976
• NII論文ID: 110002291310
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.104.54
• ISSN: 18821022
• ISSN: 09145400
• NDL書誌ID: 3917994
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3917994
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/104/1205/104_1205_54/_pdf
• データソース種別:
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  • NDL
  • Crossref
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• 抄録ライセンスフラグ: 使用不可