Glassy Ni-Ta-Ti-Zr(-Co) Alloys with High Thermal Stability and High Corrosion Resistance

• Zhang Tao

  Institute for Materials Research, Tohoku University

• Pang Shujie

  Institute for Materials Research, Tohoku University

• Asami Katsuhiko

  Institute for Materials Research, Tohoku University

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

抄録

Glassy Ni-based alloys with high thermal stability and high corrosion resistance were synthesized in Ni-Ta-Ti-Zr(-Co) alloy system. Glassy Ni₆₀Ta_40−x−yTi_xZr_y alloys exhibit supercooled liquid region exceeding 50 K in a wide composition range and the largest supercooled liquid region of 67 K was obtained at Ni₆₀Ta₂₀Ti₁₅Zr₅. Glassy Ni₅₅Ta₂₀Ti₁₀Zr₈Co₇ alloy exhibits the highest thermal stability among the Ni-based glassy alloys reported up to date, which is evidenced by its high T_g and T_x of 899 K and 977 K, respectively, and a larger supercooled liquid region of 78 K. Bulk glassy Ni₅₅Ta₂₀Ti₁₀Zr₈Co₇ alloy in a rod form with a diameter of 1 mm can be prepared by copper mold casting. The glassy Ni-Ta-Ti-Zr(-Co) alloys are spontaneously passivated with low passive current density in 1 N H₂SO₄ and 1 N HCl solutions and their corrosion rate was less than 0.1 μm/year in the above solutions.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 44 (11), 2322-2325, 2003

  公益社団法人 日本金属学会

キーワード

• nickel-based alloy
• glassy alloy
• supercooled liquid
• thermal stability
• corrosion

詳細情報

• CRID: 1390282679222227328
• NII論文ID: 130004451961
• NII論文ID: 10012537817
• NII論文ID: 30018850316
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.44.2322
• COI: 1:CAS:528:DC%2BD3sXpvFarsrc%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6752800
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6752800
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/44/11/44_11_2322/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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