Activity Measurement of the Constituents in Molten Sn-Mg-Zn Ternary Lead Free Solder Alloys by Mass Spectrometry

Naotaka Ogawa; Takahiro Miki; Tetsuya Nagasaka; Mitsutaka Hino

doi:10.2320/matertrans.43.3227

Naotaka Ogawa, Takahiro Miki, Tetsuya Nagasaka, Mitsutaka Hino

著者情報

キーワード: mass spectrometry, thermodynamics, lead-free solder, Tin-Magnesium-Zinc ternary alloy, activity, excess Gibbs free energy, interaction parameter, phase diagram

ジャーナルフリー

2002 年 43 巻 12 号 p. 3227-3233

DOI https://doi.org/10.2320/matertrans.43.3227

詳細

抄録

Activities of the constituents in an alloy proposed for the Pb-free solder, Sn–Mg–Zn, were studied experimentally using a mass spectrometer. The ion current ratios of Mg to Zn were measured in the temperature range 700–800 K . From the experimental results and the assessed thermodynamic properties of molten Sn–Mg, Sn–Zn, and Mg–Zn binary alloys, the excess Gibbs free energy of liquid Sn–Mg–Zn ternary alloy was determined. Also, phase diagram of Sn–Mg–Zn ternary system was determined.

責任著者(Corresponding author)

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