助剤無添加TiB₂の焼結性と力学的性質

• 鳥塚 史郎

  NKK総合材料技術研究所

• 西尾 浩明

  NKK総合材料技術研究所

• 岸 輝雄

  東京大学先端科学技術研究センター

書誌事項

タイトル別名

• Sinterability and Mechanical Properties of TiB₂ without Additives
• ジョザイ ムテンカ TiB2 ノ ショウケツセイ ト リキガクテキ セイシツ

抄録

A commercial TiB₂ powder with the grain size of 2μm was milled by an attriter and the powder having the average grain size of 0.9μm and the oxygen content of 3.4 mass% was obtained. Sinterability of the powder without additives and mechanical properties of hotisostatically pressed compacts were investigated. The density of fired compacts improved with rising firing temperature. However, compacts with densities approaching 100% were difficult to obtain by pressureless firing. Abnormal grain growth with cracks and residual pores occurred in the compact fired at 2000°C and its density was 92%. A compact having 99.5% density could be obtained by firing at 1800°C and sequential hot isostatic pressing with encapsulation at 1700°C. Fracture toughness, 3-point bending strength and Vickers hardness of the hot-isostatically pressed compact were 3.3 MPa·m^1/2, 420MPa and 2500, respectively.

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 (1202), 1077-1081, 1995

  公益社団法人 日本セラミックス協会

キーワード

• TiB₂
• TiO₂
• B₂O₃
• XPS
• HIP

詳細情報

• CRID: 1390282680253884288
• NII論文ID: 110002291814
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.103.1077
• ISSN: 18821022
• ISSN: 09145400
• NDL書誌ID: 3640502
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3640502
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/103/1202/103_1202_1077/_pdf
• データソース種別:
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