生体用新Ti合金の機械的性質に及ぼす酸素と窒素の微量添加の影響

• 岡崎 義光

  通産省工業技術院機械技術研究所

• 許 健司

  株式会社小川スプリング

• 伊藤 喜昌

  株式会社神戸製鋼所チタン技術部

• 立石 哲也

  産業技術融合領域研究所

書誌事項

タイトル別名

• Effect of Small Quantity of Oxygen and Nitrogen on Mechanical Properties of New Titanium Alloys for Medical Implants
• セイタイヨウ シン Ti ゴウキン ノ キカイテキ セイシツ ニ オヨボス サ

抄録

The combined effect of O and N additions on the fatigue properties with Ti-15%Zr-4%Nb-4%Ta-0.2%Pd-0.2%O-0.05%N and Ti-15%Sn-4%Nb-2%Ta-0.2%Pd-0.2%O alloys were investigated by fatigue testing in a physiological saline solution at 310 K. The fatigue test was carried out under the condition of a tension to tension mode with a sine wave at a stress ratio of 0.1 and at a frequency of 2 Hz and 10 Hz in Eagle’s medium solution using an environment cell with 90%N₂+5%CO₂+5%O₂ gas bubbling. Further the effect of human hip joint load profile estimated by analysis of forces and actions for human hip joint on the corrosion fatigue strength were examined.<BR>The effect of heat treatment on the mechanical strength of the new Ti alloys were investigated. As the solution treatment temperature increased the ductility of Ti-Zr and Ti-Sn alloys decreased. After solution treatment, the mechanical strength of Ti-Zr and Ti-Sn alloys did not change much as the aging time and the aging temperature increased. The additions of O and N to the new Ti alloys and heat treatment substantially increased the ultimate tensile strength to 1000 MPa. Also, the total elongation was more than 10%. The fatigue strength of Ti-Sn alloy added 0.2%O, 0.005%N and Ti-Zr alloy added 0.2%O, 0.05%N at 10⁸ cycles was 1050 MPa and 950 MPa, respectively. The effect of frequency on the fatigue strength at 2 Hz and 10 Hz was almost similar. Moreover, the fatigue strengths ware almost the same for sine wave and human hip joint load profile in both Ti-Zr and Ti-Sn alloys.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 62 (2), 207-214, 1998

  公益社団法人 日本金属学会

キーワード

• titanium alloy
• medical implant
• oxygen and nitrogen addition
• heat treatment
• mechanical property
• fatigue strength
• human hip joint load profile
• physiological saline solution

詳細情報

• CRID: 1390282681468292992
• NII論文ID: 10001969178
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.62.2_207
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• ISSN: http://id.crossref.org/issn/00214876
• NDL書誌ID: 4413812
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4413812
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/62/2/62_2_207/_pdf
• データソース種別:
  • JaLC
  • NDL
  • Crossref
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