扁平な高融点金属粒子Mo, Ta, Nbのミクロ分散によるAl₂O₃複合材料の靭性改善

• 和久 芳春

  宇部興産 (株) 研究開発本部宇部研究所

• 鈴木 道之

  宇部興産 (株) 研究開発本部宇部研究所

• 織田 良彦

  宇部興産 (株) 研究開発本部宇部研究所

• 神徳 泰彦

  宇部興産 (株) 研究開発本部宇部研究所

書誌事項

タイトル別名

• Improvement of Fracture Toughness of Al₂O₃ Composites by Micro-Dispersion of Flaky Refractory Metals Mo, Ta and Nb
• ヘンペイ ナ コウ ユウテン キンゾク リュウシ Mo Ta Nb ノ ミクロ

抄録

New simultaneous toughening and strengthening method for Al₂O₃ composites has been investigated. The study on flake-forming process of refractory metal powders such as Mo, Ta and Nb was carried out using high purity Al₂O₃ (AKP-30) and easy-sintering Al₂O₃ (AES-11) matrices applying the wet ball milling. Three-point flexural strength and fracture toughness by means of SEVNB method of Al₂O₃/Mo, Al₂O₃/Ta and Al₂O₃/Nb composites fabricated by hot pressing were evaluated. The micro-dispersion of flaky particles of Mo, Ta and Nb in Al₂O₃ matrices contributes remarkably to increase of the flexural strength and fracture toughness. The mechanism of improvement in strength and toughness can be induced from SEM observation of the fracture surface and TEM observation of the microstructure. These properties are closely related to the fracture manner of flaky particles and the distribution of nano particles of refractory metals.

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) 103 (1199), 713-719, 1995

  公益社団法人 日本セラミックス協会

キーワード

• Refractory metal
• Composite
• Flexural strength
• Fracture toughness
• Flaky particles
• Al₂O₃

詳細情報

• CRID: 1390001205276630528
• NII論文ID: 110002291188
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.103.713
• ISSN: 18821022
• ISSN: 09145400
• ISSN: http://id.crossref.org/issn/09145400
• NDL書誌ID: 3622258
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3622258
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/103/1199/103_1199_713/_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