TITANIA DERIVED FROM COMBINED CHEMICAL AND THERMAL TREATMENTS OF TITANIUM: <I>IN VITRO</I> APATITE FORMING ABILITY

• Osaka Akiyoshi

  Biomaterials Lab., Faculty of Engineering, Okayama University Research Center for Biomedical Engineering, Okayama University

• Tsuru Kanji

  Biomaterials Lab., Faculty of Engineering, Okayama University Research Center for Biomedical Engineering, Okayama University

• Hayakawa Satoshi

  Biomaterials Lab., Faculty of Engineering, Okayama University

抄録

Chemical treatment of a Ti substrate with 6 mass% H₂O₂ and subsequent thermal treatment yielded surface titania gel with enhanced ability of spontaneous in vitro deposition of apatite or bioactivity. We examined the effects of the chemical treatment time and the concentration and pH of the H₂O₂, solutions on both the formation of titania gel and in vitro bioactivity. The optimum treatments consisted of 6 mass% H₂O₂ treatment at 60°C for 3-6h and subsequent thermal treatment at 400°C for 1h. The formation of the titania gel layer proceeded in a pH range of 4 to 4.6, while the corrosion of the titania gel layer was enhanced at a pH below 4.3. The reactions between the titanium substrates and H₂O₂ involved the oxidation of titanium, titania gel formation and Ti (IV) dissolution. The optimized chemical and thermal treatments(CHT method) were applicable for providing a Ti mesh screen with high in vitro apatite-forming ability as well as Ti plates with or without grooves.

収録刊行物

• Phosphorus Research Bulletin

  Phosphorus Research Bulletin 17 (0), 130-141, 2004

  Japanese Association of Inorganic Phosphorus Chemistry

キーワード

• Titania
• Anatase
• Apatite formation
• Hydrogen peroxide
• Titanium plate
• Titanium mesh
• Bioactivity

詳細情報

• CRID: 1390001205463732352
• NII論文ID: 130004992465
• DOI: 10.3363/prb1992.17.0_130
• COI: 1:CAS:528:DC%2BD28XotlKktrs%3D
• ISSN: 09184783
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可