ジルコニア-アルミナウイスカー系複合セラミックスの機械的性質

• 玉利 信幸

  大阪工業技術試験所

• 田中 隆裕

  大阪工業技術試験所

• 近藤 功

  大阪工業技術試験所

• 小瀬 三郎

  大阪工業技術試験所

• 後藤 浩二

  兵庫県立工業技術センター機械金属指導所

書誌事項

タイトル別名

• Mechanical Properties of Zirconia-Alumina Whisker Composite Ceramics
• ジルコニア アルミナ ウイスカーケイ フクゴウ セラミックス ノ キカイテキ

抄録

Zirconia (3mol% Y₂O₃) composite ceramics reinforced with 10, 20 and 40vol% α-alumina whiskers were prepared by hot-pressing at 1500°C under 30MPa for 30min, and the mechanical properties were measured. The α-alumina whiskers were fabricated by thermal decomposition of aluminum borate (9Al₂O₃⋅2B₂O₃) whiskers at 1500°C for 72h in air. Almost full dense composites (>99%) were obtained by 1500°C hot-pressing. Improvement of room temperature bending strength was observed because of the whiskers. In fracture tests at 1200°C, monolithic zirconia showed plastic deformation and bent, while the composite had a strength of around 300MPa. Elastic modulus and hardness increased linearly with increasing whisker content. As the whisker content increased, fracture toughness also increased due to crack deflection by whiskers and pull-out of whiskers, and showed a maximum value (around 5.4MPa⋅m^1/2) at the whisker content of 40vol%, which was 1.4 times as large as that of monolithic zirconia.

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) 100 (1160), 613-616, 1992

  公益社団法人 日本セラミックス協会

キーワード

• Zirconia
• Alumina whiskers
• Composite ceramics
• Hot-pressing
• Mechanical properties

詳細情報

• CRID: 1390282680255855104
• NII論文ID: 110002290241
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.100.613
• COI: 1:CAS:528:DyaK38Xis1SqsrY%3D
• ISSN: 18821022
• ISSN: 09145400
• NDL書誌ID: 3771536
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3771536
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/100/1160/100_1160_613/_pdf
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可