Activity Measurement of the Constituents in Molten Ag-In-Sn Ternary Alloy by Mass Spectrometry

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  • Miki Takahiro
    Department of Metallurgy, Graduate School of Engineering, Tohoku University
  • Ogawa Naotaka
    Department of Metallurgy, Graduate School of Engineering, Tohoku University
  • Nagasaka Tetsuya
    Department of Metallurgy, Graduate School of Engineering, Tohoku University
  • Hino Mitsutaka
    Department of Metallurgy, Graduate School of Engineering, Tohoku University

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Abstract

Activities of the constituents in one of the Pb-free solder systems, Ag–In–Sn, were studied experimentally using a mass spectrometer. Ion current ratios of Ag to In were measured in the temperature range 1273–1523 K . From the experimental results and the assessed thermodynamic properties of molten Ag–Sn, Ag–In, and In–Sn binary alloys, the excess Gibbs energy of liquid Ag–In–Sn ternary alloy was determined.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 42 (5), 732-738, 2001

    The Japan Institute of Metals and Materials

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