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A new technique for measuring the effects of oxygen activity on surface energies: Application to nickel

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Abstract

A new technique for oxygen fugacity control was used in conjunction with the microcreep method for determination of surface energy. Oxygen fugacity was controlled by electro-statically controlled pumping through a solid zirconia electrolyte. The method was applied to the measurement of the surface energy of nickel at 1300°C as a function of oxygen fugacity in the range 10-6 to 10-13 N/m2. The determined surface energy value, 2.12 J/m2, at the lowest oxygen fugacity is in good agreement with other measurements, while values at other pressures indicate a variation with oxygen adsorption similar to that observed for copper. Twin and grain boundary energies were also determined and found to agree well with earlier work once a texture effect for metal foils was included in the analysis.

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Authors and Affiliations

  1. Duriron Company, Dayton, Ohio

    D. R. Stickle (Metallurgist)

  2. Metallurgical Engineering Department, Ohio State University, 43210, Columbus, OH

    J. P. Hirth (Professor), G. Meyrick (Professor) & R. Speiser (Professor)

Authors
  1. D. R. Stickle
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  2. J. P. Hirth
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  3. G. Meyrick
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  4. R. Speiser
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Stickle, D.R., Hirth, J.P., Meyrick, G. et al. A new technique for measuring the effects of oxygen activity on surface energies: Application to nickel. Metall Trans A 7, 71–74 (1976). https://doi.org/10.1007/BF02644041

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  • DOI: https://doi.org/10.1007/BF02644041

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