Experimental investigation and thermodynamic assessment of phase equilibria in the Ag-Au-Sn system

F. Gao; C. P. Wang; Y. Y. Li; X. J. Liu; Y. Takaku; I. Ohnuma; K. Ishida

doi:10.1007/s11664-009-0859-3

Experimental investigation and thermodynamic assessment of phase equilibria in the Ag-Au-Sn system

F. Gao, C. P. Wang, Y. Y. Li, X. J. Liu, Y. Takaku, I. Ohnuma, K. Ishida

ENG - Metallurgy

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The phase equilibria of the Ag-Au-Sn ternary system at 300°C, 400°C, and 500°C were experimentally investigated. The equilibrium compositions of the equilibrated alloys and diffusion couples between Ag _x Au _1-x (x = 0.25, 0.75) alloys and liquid Sn were determined by electron probe microanalysis (EPMA). The phase transformations were investigated by means of differential scanning calorimetry (DSC). Based on the experimental data of phase equilibria and thermodynamic properties, the thermodynamic assessment of the Ag-Au-Sn system was carried out based on the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs free energies of the phases were optimized, and reasonable agreement between the calculations and experimental data was obtained.

Original language	English
Pages (from-to)	2096-2105
Number of pages	10
Journal	Journal of Electronic Materials
Volume	38
Issue number	10
DOIs	https://doi.org/10.1007/s11664-009-0859-3
Publication status	Published - 2009 Oct

Keywords

CALPHAD method
Pb-free solders
Sn-Ag-Au system

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1007/s11664-009-0859-3

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title = "Experimental investigation and thermodynamic assessment of phase equilibria in the Ag-Au-Sn system",

abstract = "The phase equilibria of the Ag-Au-Sn ternary system at 300°C, 400°C, and 500°C were experimentally investigated. The equilibrium compositions of the equilibrated alloys and diffusion couples between Ag x Au 1-x (x = 0.25, 0.75) alloys and liquid Sn were determined by electron probe microanalysis (EPMA). The phase transformations were investigated by means of differential scanning calorimetry (DSC). Based on the experimental data of phase equilibria and thermodynamic properties, the thermodynamic assessment of the Ag-Au-Sn system was carried out based on the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs free energies of the phases were optimized, and reasonable agreement between the calculations and experimental data was obtained.",

keywords = "CALPHAD method, Pb-free solders, Sn-Ag-Au system",

author = "F. Gao and Wang, {C. P.} and Li, {Y. Y.} and Liu, {X. J.} and Y. Takaku and I. Ohnuma and K. Ishida",

note = "Funding Information: This work was jointly supported by the National Natural Science Foundation of China (Nos. 50425101 and 50771088) and the Ministry of Education, PR China (No. 707037). The Core Research for Evolutional Science and Technology (CREST) and Japan Science and Technology Agency (JST) are also acknowledged.",

year = "2009",

month = oct,

doi = "10.1007/s11664-009-0859-3",

language = "English",

volume = "38",

pages = "2096--2105",

journal = "Journal of Electronic Materials",

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TY - JOUR

T1 - Experimental investigation and thermodynamic assessment of phase equilibria in the Ag-Au-Sn system

AU - Gao, F.

AU - Wang, C. P.

AU - Li, Y. Y.

AU - Liu, X. J.

AU - Takaku, Y.

AU - Ohnuma, I.

AU - Ishida, K.

N1 - Funding Information: This work was jointly supported by the National Natural Science Foundation of China (Nos. 50425101 and 50771088) and the Ministry of Education, PR China (No. 707037). The Core Research for Evolutional Science and Technology (CREST) and Japan Science and Technology Agency (JST) are also acknowledged.

PY - 2009/10

Y1 - 2009/10

N2 - The phase equilibria of the Ag-Au-Sn ternary system at 300°C, 400°C, and 500°C were experimentally investigated. The equilibrium compositions of the equilibrated alloys and diffusion couples between Ag x Au 1-x (x = 0.25, 0.75) alloys and liquid Sn were determined by electron probe microanalysis (EPMA). The phase transformations were investigated by means of differential scanning calorimetry (DSC). Based on the experimental data of phase equilibria and thermodynamic properties, the thermodynamic assessment of the Ag-Au-Sn system was carried out based on the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs free energies of the phases were optimized, and reasonable agreement between the calculations and experimental data was obtained.

AB - The phase equilibria of the Ag-Au-Sn ternary system at 300°C, 400°C, and 500°C were experimentally investigated. The equilibrium compositions of the equilibrated alloys and diffusion couples between Ag x Au 1-x (x = 0.25, 0.75) alloys and liquid Sn were determined by electron probe microanalysis (EPMA). The phase transformations were investigated by means of differential scanning calorimetry (DSC). Based on the experimental data of phase equilibria and thermodynamic properties, the thermodynamic assessment of the Ag-Au-Sn system was carried out based on the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs free energies of the phases were optimized, and reasonable agreement between the calculations and experimental data was obtained.

KW - CALPHAD method

KW - Pb-free solders

KW - Sn-Ag-Au system

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U2 - 10.1007/s11664-009-0859-3

DO - 10.1007/s11664-009-0859-3

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AN - SCOPUS:69049108616

VL - 38

SP - 2096

EP - 2105

JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

SN - 0361-5235

IS - 10

ER -

Experimental investigation and thermodynamic assessment of phase equilibria in the Ag-Au-Sn system

Abstract

Keywords

ASJC Scopus subject areas

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