Oxidation Behavior of Au-55 mol%Ti High Temperature Shape Memory Alloy during Heating in Ar-50 vol%O<sub>2</sub> Environment

DOI Web Site Web Site 23 References Open Access
  • Shim Hyunbo
    Precision and Intelligence Laboratory, Tokyo Institute of Technology
  • Tahara Masaki
    Precision and Intelligence Laboratory, Tokyo Institute of Technology
  • Inamura Tomonari
    Precision and Intelligence Laboratory, Tokyo Institute of Technology
  • Goto Kenji
    Tanaka Kikinzoku Kogyo K. K.
  • Yamabe-Mitarai Yoko
    National Institute of Materials Science, Functional Structure Materials Group
  • Hosoda Hideki
    Precision and Intelligence Laboratory, Tokyo Institute of Technology

Bibliographic Information

Other Title
  • Oxidation Behavior of Au-55 mol%Ti High Temperature Shape Memory Alloy during Heating in Ar-50 vol%O₂ Environment

Search this article

Abstract

Oxidation behavior and subsequent phase decomposition of Au-55 mol%Ti high temperature shape memory alloy are investigated for heating oxidation up to 1773 K in Ar-50 vol%O2 using a simultaneous thermogravimetry combined with differential scanning calorimetry (TG-DSC). Au-55 mol%Ti powder specimen begins to be oxidized at 802 K and the oxidation reaction is most active at 1150 K. Since the oxidation start temperature is comparable to the martensitic transformation temperatures, the oxidation must be a problem for practical high-temperature long-term applications. An equilibrium phase reaction appears near 1346 K which is melting of Au produced by the reaction of AuTi + O2 → Au + TiO2. The oxidation reaction and products assessed by the TG-DSC measurement are in good agreement with those obtained by X-ray diffraction analysis.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 56 (4), 600-604, 2015

    The Japan Institute of Metals and Materials

References(23)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top