Thermodynamic Assessment of the Ni-Bi Binary System and Phase Equilibria of the Sn-Bi-Ni Ternary System

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作者
Sun-Kyoung Seo
Moon Gi Cho
Hyuck Mo Lee
机构
[1] Korea Advanced Institute of Science and Technology,Department of Materials Science and Engineering
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Ni-Bi system; thermodynamic assessment; Sn-Bi-Ni system; equilibria;
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摘要
As a basis to understand the interfacial reaction between the Sn-Bi solder and the Ni substrate in electronic packaging, thermodynamic calculations of phase equilibria have been carried out on the binary Ni-Bi system. The Gibbs free energy of the NiBi phase has been approximated, using a three-sublattice model, and thermodynamic parameters have been evaluated, using available experimental information on phase boundaries and other related thermodynamic properties. The calculated phase diagram and thermodynamic quantities of the Ni-Bi binary system showed good agreement with the experimental data. The Sn-Bi-Ni ternary system was calculated using the thermodynamic parameters of the Sn-Bi, Sn-Ni, and Ni-Bi binary systems, and it was compared with experimental measurements.
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页码:1536 / 1544
页数:8
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