The viscosities of lead, tin, and Pb-Sn alloys
- Cite this article as:
- Thresh, H.R. & Crawley, A.F. MT (1970) 1: 1531. doi:10.1007/BF02641997
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The viscosities of lead, tin, and Pb-Sn alloys have been determined by an absolute technique using an oscillational viscosimeter. By careful experimentation, it has been possible to obtain results which are accurate to within ±0.5 pct. For the pure metals, the data are in good agreement with some recent work. The results obey Andrade’s equation ηv1/3= A expC/vT, the constants having values ofA = 2.54 × 10−3 and C = 86.30 for lead, andA = 2.75 × 10−3 and C = 88.49 for tin. No evidence has been found to support the reports of some investigators that Pb-Sn alloys experience structural changes or abnormal interatomic reactions in any specific composition ranges such as around the eutectic. The results confirm recent work that isothermal viscosities vary with composition in a linear manner.