Thermodynamic properties of the liquid Ag-Bi-Cu-Sn lead-free solder alloys
The electromotive force measurement method was employed to determine the thermodynamic properties of liquid Ag-Bi-Cu-Sn alloys using solid electrolyte galvanic cells as shown below: Kanthal+Re, Ag-Bi-Cu-Sn, SnO2 | Yttria Stabilized Zirconia | air, Pt, Experiments were made within temperatur...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, Technical Faculty, Bor
2014-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391400015G.pdf |
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| Summary: | The electromotive force measurement method was employed to determine the
thermodynamic properties of liquid Ag-Bi-Cu-Sn alloys using solid electrolyte
galvanic cells as shown below: Kanthal+Re, Ag-Bi-Cu-Sn, SnO2 | Yttria
Stabilized Zirconia | air, Pt, Experiments were made within temperature
interval: 950 - 1300K along four composition paths of constant ratios: XAg :
XBi : XCu = 1, XAg : (XBi + XCu) = 3:2 for XBi = XCu, XBi : (XAg + XCu) = 3:2
for XAg = XCu and XCu : (XAg + XBi) = 3:2 for XAg = XBi and tin concentration
changing from 0.1 to 0.9 mole fractions, every 0.1. Almost all the results
were approximated by straight line equations: EMF vs T, and tin activities
were then calculated in arbitrary temperature; measurement results were
presented by graphs. Unusual activity plot for XBi : (XAg + XCu) = 3:2
composition path was most probably caused by miscibility gap detected earlier
in Bi-Cu-Sn ternary liquid alloys. |
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| ISSN: | 1450-5339 |