TY - JOUR
T1 - Thermodynamic assessment of phase equilibria In the Sn-Au-BI system with key experimental verification
AU - Gao, Feng
AU - Wang, Cuiping
AU - Liuaj, Xingjun
AU - Takaku, Yoshikazu
AU - Ohnuma, Ikuo
AU - Tshida, Kiyohito
PY - 2010/3/1
Y1 - 2010/3/1
N2 - The phase equilibria at 200 °C, 250 °C, 300 °C, and 400 °C and the phase transformation of the Sn-Au-Bi system were investigated by using the electron probe micro-analyzer (EPMA) and differential scanning calorimeter (DSC), respectively. It is found that there is a new ternary intermetallic compound with a possible AuSn structure (called the (φ phase in the present work), which has a limited solubility of Au in the Au-rich portion, and the (φ phase decomposes peritectically at about 313 °C. Based on the experimental data reported in the previous papers and new experimental data determined by the present work, thermodynamic assessments of the Sn-Au-Bi system were carried out by the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs free energy of each phase were optimized, and reasonable agreement between the calculated results and experimental data was obtained in the Sn-Au-Bi ternary system.
AB - The phase equilibria at 200 °C, 250 °C, 300 °C, and 400 °C and the phase transformation of the Sn-Au-Bi system were investigated by using the electron probe micro-analyzer (EPMA) and differential scanning calorimeter (DSC), respectively. It is found that there is a new ternary intermetallic compound with a possible AuSn structure (called the (φ phase in the present work), which has a limited solubility of Au in the Au-rich portion, and the (φ phase decomposes peritectically at about 313 °C. Based on the experimental data reported in the previous papers and new experimental data determined by the present work, thermodynamic assessments of the Sn-Au-Bi system were carried out by the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs free energy of each phase were optimized, and reasonable agreement between the calculated results and experimental data was obtained in the Sn-Au-Bi ternary system.
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U2 - 10.1557/jmr.2010.0056
DO - 10.1557/jmr.2010.0056
M3 - Article
AN - SCOPUS:77958087273
SN - 0884-2914
VL - 25
SP - 576
EP - 586
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 3
ER -