Contribution to the thermodynamics of the Co-Sn system

G. P. Vassilev; K. I. Lilova

Contribution to the thermodynamics of the Co-Sn system

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

Abstract

Comments on the available topological and thermochemical data of the Co-Sn system have been done. Updated data have been used in order to obtain adjustable coefficients for phase diagram calculation. In the present work both CoSn ₃ modifications are modelled as different phases. The binary melt and the Co-based phases with face centred cubic and hexagonal structures are modelled as substitutional solutions. The allotropie forms of tin (αSn, βSn) as well as the intermediate phases CoSn, CoSn₂, αCoSn₃ and βCoSn₃ are modelled as stoichiometric compounds. The phases αCO₂Sn₃ and βCo₂Sn₃ are described by four sublattice model: (Co)₁(Sn)₁(Co,Va)_0.5(Co,Va)_0.5 in order to account for the order-disorder transition. Reasonable agreement has been obtained between the calculated and the selected experimental thermodynamic and phase equilibrium data.

Original language	English (US)
Pages (from-to)	365-376
Number of pages	12
Journal	Archives of Metallurgy and Materials
Volume	51
Issue number	3
State	Published - 2006
Externally published	Yes

Keywords

Co-Sn phase diagram
Lead-free solders
Thermodynamic optimization

ASJC Scopus subject areas

Metals and Alloys

Cite this

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title = "Contribution to the thermodynamics of the Co-Sn system",

abstract = "Comments on the available topological and thermochemical data of the Co-Sn system have been done. Updated data have been used in order to obtain adjustable coefficients for phase diagram calculation. In the present work both CoSn 3 modifications are modelled as different phases. The binary melt and the Co-based phases with face centred cubic and hexagonal structures are modelled as substitutional solutions. The allotropie forms of tin (αSn, βSn) as well as the intermediate phases CoSn, CoSn2, αCoSn3 and βCoSn3 are modelled as stoichiometric compounds. The phases αCO2Sn3 and βCo2Sn3 are described by four sublattice model: (Co)1(Sn)1(Co,Va)0.5(Co,Va)0.5 in order to account for the order-disorder transition. Reasonable agreement has been obtained between the calculated and the selected experimental thermodynamic and phase equilibrium data.",

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T1 - Contribution to the thermodynamics of the Co-Sn system

AU - Vassilev, G. P.

AU - Lilova, K. I.

PY - 2006

Y1 - 2006

N2 - Comments on the available topological and thermochemical data of the Co-Sn system have been done. Updated data have been used in order to obtain adjustable coefficients for phase diagram calculation. In the present work both CoSn 3 modifications are modelled as different phases. The binary melt and the Co-based phases with face centred cubic and hexagonal structures are modelled as substitutional solutions. The allotropie forms of tin (αSn, βSn) as well as the intermediate phases CoSn, CoSn2, αCoSn3 and βCoSn3 are modelled as stoichiometric compounds. The phases αCO2Sn3 and βCo2Sn3 are described by four sublattice model: (Co)1(Sn)1(Co,Va)0.5(Co,Va)0.5 in order to account for the order-disorder transition. Reasonable agreement has been obtained between the calculated and the selected experimental thermodynamic and phase equilibrium data.

AB - Comments on the available topological and thermochemical data of the Co-Sn system have been done. Updated data have been used in order to obtain adjustable coefficients for phase diagram calculation. In the present work both CoSn 3 modifications are modelled as different phases. The binary melt and the Co-based phases with face centred cubic and hexagonal structures are modelled as substitutional solutions. The allotropie forms of tin (αSn, βSn) as well as the intermediate phases CoSn, CoSn2, αCoSn3 and βCoSn3 are modelled as stoichiometric compounds. The phases αCO2Sn3 and βCo2Sn3 are described by four sublattice model: (Co)1(Sn)1(Co,Va)0.5(Co,Va)0.5 in order to account for the order-disorder transition. Reasonable agreement has been obtained between the calculated and the selected experimental thermodynamic and phase equilibrium data.

KW - Co-Sn phase diagram

KW - Lead-free solders

KW - Thermodynamic optimization

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JF - Archives of Metallurgy and Materials

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Contribution to the thermodynamics of the Co-Sn system

Abstract

Keywords

ASJC Scopus subject areas

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