Mechanical Property and Corrosion Resistance Evaluations of Ti-6Al-7Nb Alloy Brazed with Bulk Metallic Glasses

• Miura Eri

  Division of Dental and Biomedical Materials Science, Graduate School of Biomedical Sciences, Nagasaki University

• Kato Hidemi

  Institute for Materials Research, Tohoku University

• Ogata Toshiaki

  Graduate Student, Nagasaki University School of Dentistry

• Nishiyama Nobuyuki

  RIMCOF Tohoku University Laboratory

• Specht Eliot D.

  Oak Ridge National Laboratory

• Shiraishi Takanobu

  Division of Dental and Biomedical Materials Science, Graduate School of Biomedical Sciences, Nagasaki University

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

• Hisatsune Kunihiro

  Division of Dental and Biomedical Materials Science, Graduate School of Biomedical Sciences, Nagasaki University

抄録

Exploitation of metallic glass as new brazing filler for Ti-based biomedical alloy was attempted. Ti-6Al-7Nb was used as a brazed material, and candidates of bulk metallic glass brazing filler were Cu₆₀Hf₂₅Ti₁₅, Mg₆₅Cu₂₅Gd₁₀, Zr₅₅Cu₃₀Al₁₀Ni₅ and Pd₄₀Cu₃₀P₂₀Ni₁₀. Convergence infrared-ray brazing was conducted for brazing Ti-6Al-7Nb/metallic glass in Ar atmosphere. After brazing, hardness measurement, X-ray tomography, cross-sectional observation, artificial saliva immersion test and tensile test were performed to evaluate brazability, mechanical property and corrosion resistance of the obtained brazing joints.<BR>The results of brazing using these metallic glass fillers show that all the metallic glasses were brazable to Ti-6Al-7Nb except for Mg₆₅Cu₂₅Gd₁₀. Mg₆₅Cu₂₅Gd₁₀, Cu₆₀Hf₂₅Ti₁₅ and their joints collapsed rapidly during immersion test. Zr₅₅Cu₃₀Al₁₀Ni₅ joint was the best in terms of degradation resistance; however, tensile strength was inferior to the conventional one. Pd₄₀Cu₃₀Ni₁₀P₂₀ filler and Zr₅₅Cu₃₀Al₁₀Ni₅ filler and their joints did not show any collapse or tarnish during the immersion test. Pd₄₀Cu₃₀Ni₁₀P₂₀ joint showed the excellent properties in terms of both corrosion resistance and tensile strength, which were superior to a joint brazed using Ti-15Cu-25Ni conventional filler. X-ray tomograph indicates that fracture tends to occur in the vicinity of the brazing interface after tensile test.<BR>The brazed metallic glass fillers were fully crystallized, excluding Pd₄₀Cu₃₀Ni₁₀P₂₀ filler. Pd₄₀Cu₃₀Ni₁₀P₂₀ brazed filler contained maple-leaf like primary dendrite, peritectoid and a few microns interfacial reaction layer in glassy matrix. The results indicated that Pd₄₀Cu₃₀Ni₁₀P₂₀ is promising brazing filler for dental or biomaterial devices.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 48 (8), 2235-2243, 2007

  公益社団法人 日本金属学会

キーワード

• bulk metallic glass
• brazing filler
• titanium-aluminum-niobium alloy
• biomaterial
• infrared joining
• degradation test
• artificial saliva
• joint strength

詳細情報

• CRID: 1390001204250920192
• NII論文ID: 10019517920
• NII論文ID: 130004453707
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mer2007612
• ISSN: 13475320
• ISSN: 13459678
• HANDLE: 10097/52262
• NDL書誌ID: 8838792
• Web Site: https://tohoku.repo.nii.ac.jp/records/44190
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8838792
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/48/8/48_MER2007612/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可