生体用合金の擬似体液中での耐食性と不動態皮膜中の合金元素の役割

• 岡崎 義光

  通産省工業技術院機械技術研究所

• 太田 学

  株式会社アドバンス次世代MEシステム開発室

• 伊藤 喜昌

  株式会社神戸製鋼所技術開発本部

• 立石 哲也

  通産省工業技術院機械技術研究所

書誌事項

タイトル別名

• Corrosion Resistance of Implant Alloys in Pseudo Physiological Solution and Role of Alloying Elements in Passive Films
• セイタイヨウ ゴウキン ノ ギジ タイエキチュウ デ ノ タイショクセイ ト

抄録

The corrosion resistance of implant alloys was investigated by anodic polarization measurements in pseudo physiological solution. Role of alloying elements in passive film formed on implant alloys by the anodic polarization was also examined with X-ray photoelectron spectroscopy (XPS). Passivity zones of SUS316L stainless steel and Co-Cr alloys are narrow, and a rapid increase of current density results from the low potential in comparison to Ti alloys. The passive current density of Ti-15%Zr-4%Nb-2%Ta-0.2%Pd alloy (mass%) is very low. Effects of protein and dissolved oxygen with 90%N₂+5%CO₂+5%O₂ gas bubbling on anodic polarization curves are not detected. The passive film formed on the Ti-6%Al-4%V extra low interstitial alloy consist mainly of TiO₂, Al₂O₃ and small amounts of V oxide. Passive films on Ti-15%Zr-4%Nb-2%Ta-0.2%Pd and Ti-15%Sn-4%Nb-2%Ta-0.2%Pd alloys consist of TiO₂, ZrO₂, SnO₂, Nb₂O₅, Ta₂O₅ and PdO or Pd. XPS spectra from the Co-Cr alloy and SUS316L stainless steel show peaks of Cr₂O₃, CoO, Fe oxide, Mo oxide, Ni, Co, Fe, Mo and Cr. As Ni, V and Co are strong cytotoxic elements, it was found that biocompatibility of SUS316L, Co-Cr, Ti-6%Al-4%V ELI alloys become lesser after a long time use in the living body. The thickness of the passive film on Ti alloys is thinner than that of Co-Cr alloy. Passive film formed on Ti-15%Zr-4%Nb-2%Ta-0.2%Pd alloy is strong and stable.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 59 (2), 229-236, 1995

  公益社団法人 日本金属学会

キーワード

• implant alloy
• pseudo physiological saline solution
• anodic polarization curve
• passive film
• X-ray photoelectron spectroscopy
• alloying elements

詳細情報

• CRID: 1390001206490447104
• NII論文ID: 10001669276
• NII論文ID: 10003509545
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.59.2_229
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• ISSN: http://id.crossref.org/issn/00214876
• NDL書誌ID: 3601779
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3601779
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/59/2/59_2_229/_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