Activity Measurement of Titanium-Tin Alloys by Knudsen Effusion Method

  • Itoh Satoshi
    Innovation Plaza, Graduate School of Engineering, Tohoku University
  • Inoue Yosuke
    Graduate School of Environmental Studies, Tohoku University

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The activity of tin in Ti-Sn alloy has been determined at 1400 K by Knudsen effusion method with electrobalance. The activity of titanium was calculated by applying the Gibbs-Duhem relation to the Ti-Sn binary system. The standard Gibbs energy of the formation of intermetallic compound such as Ti3Sn, Ti2Sn, Ti5Sn3 and Ti6Sn5 was calculated at 1400 K by using the activities of components. X-ray diffraction studies were additionally conducted for some samples after the activity measurement. The identified phases were consistent with the phase diagram reported in the literature.

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