カプセルフリーＮ２－ＨＩＰ処理によるＡｌ２Ｏ３／Ｍｏ２Ｎコンポジットの合成と特性評価

• 高岡 勝哉

  同志社大学理工学部機能分子・生命化学科

• 村瀬 康

  同志社大学理工学部機能分子・生命化学科

• 加藤 将樹

  同志社大学理工学部機能分子・生命化学科

• 廣田 健

  同志社大学理工学部機能分子・生命化学科

書誌事項

タイトル別名

• Synthesis of Al2O3/Mo2N Composite Materials Using Capsule-free Nitrogen HIPing and their Evaluation
• カプセルフリー N2 HIP ショリ ニ ヨル Al2O3 Mo2Nコンポジット ノ ゴウセイ ト トクセイ ヒョウカ

抄録

Synthesis of dense composite materials with the compositions of Al₂O₃/Mo₂N=100/0∼40/60 vol% has been attempted directly from Al₂O₃/Mo mixed raw powder compacts using capsule-free N₂ hot isostatic pressing (HIP). During HIPing [1500°C/(16∼20-200MPa)/1h], solid/gas reaction between Mo and N₂ was introduced to form Mo₂N. The most of sintered composites consisting of only Al₂O₃ and Mo₂N phases reached to a higher relative density than 98.0 % with closed pores nevertheless capsule-free HIPing. Dispersion of Mo₂N particles just formed suppressed the grain growth of Al₂O₃ during sintering. Mechanical properties, such as bending strength (σ_b), Vickers hardness (H_V), fracture toughness (K_1C), and other properties have been evaluated as a function of their compositions. The best mechanical values of σ_b (∼573 MPa), H_V (∼20.3 GPa) and K_1C (∼5.00 MPa·m^1/2) were attained at the composition of Al₂O₃/Mo₂N=90/10 vol%, due to a high density (98.6 %) and small grain size of Al₂O₃ matrix (G_s∼4.70 μm). Further addition of Mo₂N reduced the sinterability of matrix grains, resulting in low densities of around 90 % at the 40/60 vol% composition.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 57 (2), 112-117, 2010

  一般社団法人 粉体粉末冶金協会

キーワード

• molybdenum nitride
• aluminum oxide
• composites
• capsule-free hot isostatic pressing
• mechanical properties

詳細情報

• CRID: 1390282681284824576
• NII論文ID: 10026346278
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.57.112
• COI: 1:CAS:528:DC%2BC3cXjtVOgsrw%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 10583707
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10583707
• 本文言語コード: ja
• 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