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Densities and viscosities of some liquid alloys of zinc and cadmium

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Abstract

The densities and viscosities of the alloy systems Zn-Sn, Cd-Sn, and Cd-Pb and of zinc-and cadmium-rich Zn-Pb and Cd-Tl alloys have been determined accurately by absolute techniques of proven reliability. Isothermal molar volumes for all five systems show positive deviations from ideal mixing in agreement with other published data. Isothermal viscosities demonstrate large negative deviations from ideal mixing. In each system, solute additions give rise to sharp decreases in viscosity at the zinc-and cadmium-rich ends of the system, a phenomenon not reflected in the density data. To explain the viscosity results, it is proposed that alloying additions to zinc and cadmium alter the interatomic bonding associated with the surface structure of these metals causing disproportionate viscosity changes. Recent surface tension studies have aptly demonstrated that the surfaces of zinc and cadmium are atomically more ordered than the bulk metal.

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Authors and Affiliations

  1. Physical Metallurgy Division, Mines Branch, Department of Energy, Mines and Resources, Non-Ferrous Metals Section, Ottawa, Ontario, Canada

    A. F. Crawley (Research Scientist)

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  1. A. F. Crawley
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Crawley, A.F. Densities and viscosities of some liquid alloys of zinc and cadmium. Metall Trans 3, 971–975 (1972). https://doi.org/10.1007/BF02647674

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  • DOI: https://doi.org/10.1007/BF02647674

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