レーザ照射によるチタンの表面窒化と耐摩耗性改善

• 山口 富子

  九州工業大学大学院工学研究院

• 米正 裕

  九州工業大学大学院生命体工学研究科

• 西尾 一政

  九州工業大学大学院生命体工学研究科

書誌事項

タイトル別名

• Surface Nitriding and Improvement of Wear Resistance of Titanium Using Laser Irradiation
• レーザ ショウシャ ニ ヨル チタン ノ ヒョウメン チッカ ト タイマモウセイ カイゼン

抄録

  Pure titanium is a biocompatible material that is also useful in high-temperature environments, however, wear resistance of the pure titanium is weak. To improve the wear resistance of pure titanium, surface modification is performed using laser beam heating under various laser conditions. The modified surface layer produced by laser melting consists of titanium nitride (TiN), which improves the hardness and the wear resistance. However, the surface of this modified layer is not flat.<br>   In this study, the laser irradiation was performed in a controlled atmosphere and the effects of the atmosphere on the microstructure, hardness, and wear resistance of the irradiated region were investigated. As the pure titanium surface was heated by laser irradiation, a TiN film was formed on its surface without the introduction of cracks. A lamellar structure was also observed under the TiN film. The maximum TiN thickness obtained without cracking or peeling of the base metal was approximately 13 µm. In comparison with the base metal, the hardness and wear resistance of the TiN film were approximately 8 and 22 times higher, respectively.<br>

収録刊行物

• 日本金属学会誌

  日本金属学会誌 75 (12), 697-704, 2011

  公益社団法人 日本金属学会

キーワード

• laser irradiation
• titanium
• TiN film
• wear resistance

詳細情報

• CRID: 1390001206482472704
• NII論文ID: 10030260305
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet.75.697
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 023365408
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023365408
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/75/12/75_12_697/_pdf
• 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