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Transport Properties of Concentrated Ag-Pd and Cu-Ni Alloys from 300–1000 K

  • D. W. Yarbrough
  • R. K. Williams
  • R. S. Graves

Abstract

For temperatures above 300 K, thermal conductivity data for concentrated binary silver-palladium and copper-nickel alloys are scarce. A recent review and analysis of thermal conductivity data for selected binary alloy systems by Ho et al.1 included extrapolations of existing data for Ag-Pd and Cu-Ni into composition and temperature regions where data were absent. Over a broad composition range, the electronic Lorenz functions that were calculated showed high temperature values significantly below the Sommerfeld value, Lo = 2.443 × 10−8 V2K−2. These results strongly suggested the collection of additional experimental data to confirm the published extrapolation. Values for thermal conductivity, λ, electrical resistivity, ρ, and absolute Seebeck coefficient, S, were measured for the alloys silver (50 wt %)-palladium (50 wt %) and copper (50 wt %)-nickel (50 wt %) in the temperature interval 300–1000 K. Results for the three transport properties presented in this paper show that the electronic Lorenz functions exceed the Sommerfeld value over most of the temperature range studied.

Keywords

Electrical Resistivity Thermal Conductivity Data Alloy Silver Union Carbide Corporation Binary Alloy System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    C. Y. Ho, M. W. Ackerman, K. Y. Wu, S. G. Oh, and T. N. Havill, “Thermal Conductivity of Ten Selected Binary Alloy Systems,” J. Phys. Chem. Ref. Data 7: 959 (1978).CrossRefGoogle Scholar
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    J. P. Moore, D. L. McElroy, and R. S. Graves, A Technique for Determining Thermal and Electrical Conductivity and Absolute Seebeck Coefficient Between 300 and 1000 K, ORNL-4986 (1974).Google Scholar
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    J. P. Moore, R. K. Williams, and R. S. Graves, “Thermal Conductivity, Electrical Resistivity, and Seebeck Coefficient of High-Purity Chromium from 280 to 1000 K,” J. Appl. Phys. 48: 610 (1977).CrossRefGoogle Scholar
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    R. S. Graves, R. K. Williams, and D. L. McElroy, High Temperature Longitudinal Calibration, p. 125, ORNL-5589 (1979).Google Scholar
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    D. W. Yarbrough and R. K. Williams, Method for Estimating the Lattice Thermal Conductivity of Metallic Alloys, ORNL-5434 (1978).Google Scholar
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    M. W. Ackerman, K. Y. Wu, and C. Y. Ho, “Lattice Thermal Conductivity and Lorenz Function of Copper-Nickel and Silver-Palladium Alloy Systems,” International Conference on Thermal Conductivity, 14th, Storrs, Conn. (1975) pp. 245–251.Google Scholar

Copyright information

© Purdue Research Foundation 1983

Authors and Affiliations

  • D. W. Yarbrough
    • 1
  • R. K. Williams
    • 1
  • R. S. Graves
    • 1
  1. 1.Metals and Ceramics DivisionOak Ridge National LaboratoryOak RidgeUSA

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