Dynamic viscosities of pure tin and Sn-Ag,Sn-Cu,and Sn-Ag-Cu eutectic melts |
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| Authors: | E. V. Rozhitsina S. Gruner I. Kaban W. Hoyer V. E. Sidorov P. S. Popel’ |
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| Affiliation: | 1.Ural State Pedagogical University,Ekaterinburg,Russia;2.Technical University,Kemnitz,Germany |
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| Abstract: | The dynamic viscosities of the melts of pure tin and eutectic Sn-Ag, Sn-Cu, and Sn-Ag-Cu alloys are studied in heating followed by cooling, and the maximum heating temperature was 1200°C. An irreversible decrease in the viscosity is found in the temperature range 800–1000°C in the polytherms of all melts. This finding is related to the loss of a local order in a melt and can be used to develop temperature regimes for the production of lead-free solders. |
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