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Para-equilibrium Phase Diagrams, μH − XM, for Pd Alloy-H Systems

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Abstract

There are many papers concerning H in Pd alloys but their corresponding para-equilibrium phase diagrams have not been given. Para-equilibrium is the most common condition under which data are obtained for Pd alloy-H systems and refers to the condition where the mobile interstitial species (H) reaches equlibrium within an immobile metal alloy framework. Based on these para-equilibrium phase diagrams, an explanation will be offered for the experimental observation that the terminal hydrogen solubilities are always greater in fcc, substitutional Pd alloys than in Pd itself where this term refers to the limiting solubility of H in the dilute phase before the hydride phase forms.

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References

  1. Y. Sakamoto, F. Chen, M. Ura, and T. Flanagan, Thermodynamic Properties for Solution of Hydrogen in Palladium-Based Binary Alloys. Ber. Bunsenges. Phys. Chem., 1995, 99, p 807

    Article  Google Scholar 

  2. A. Hultgren, Isothermal Transformation of Austenite, Trans. ASM, 1947, 39, p 915

    Google Scholar 

  3. M. Hillert, and J. Agren, On the Definitions of Paraequilibrium and Orthoequilibrium, Scr. Mater., 2004, 50, p 697

    Article  Google Scholar 

  4. T. Flanagan, W. Oates, and S. Kishimoto, Solvus Thermodynamics of Metal-Hydrogen Interstitial Solutions, Acta Met., 1983, 31, p 199

    Article  Google Scholar 

  5. W. Oates, and T. Flanagan, The Terminal Solubility of Hydrogen in Niobium-Tantalum Alloys, Acta Met., 1985, 33, p 693

    Article  Google Scholar 

  6. S. Lim, T. Flanagan, and W. Oates, On the Terminal Solubility of Hydrogen in NbV alloys, Acta Met., 1988, 36, p 2047

    Article  Google Scholar 

  7. Y. Sakamoto, K. Yuwasa, and K. Hirayama, X-Ray Investigation of the Absorption of Hydrogen by Several Palladium and Nickel Solid Solution Alloys, J. Less-Common Met., 1982, 88, p 115

    Article  Google Scholar 

  8. A. Irodova, V. Glazkov, V. Somenkov, V. Antonov, and E. Ponyatovsky, Hydrogen Caused Ordering in PdAg Alloy, Z. Phys, 1989 163, p 53-57

    Article  Google Scholar 

  9. M.L.H. Wise, J.P.G. Farr, and I.R. Harris, X-Ray Studies of the \(\alpha /\beta\) Miscibility Gaps of Some Palladium Solid Solution-Hydrogen Systems, J. Less-Common Met., 1975, 41, p 115-127

    Article  Google Scholar 

  10. Y. Sakamoto, K. Baba, and T. Flanagan, The Effect of Alloying of Palladium on the Hydrogen-Palladium Miscibility Gap, Z. Phys, 1988, 158, p 223

    Article  Google Scholar 

  11. J. Kirkwood, and I. Oppenheim, Chemical Thermodynamics, McGraw-Hill, New York, 1961

    Google Scholar 

  12. W. Oates, and T. Flanagan, The Solubility of Hydrogen in Transition Metals and Their Alloys, Prog. Solid State Chem., 1981, 13, p 193

    Article  Google Scholar 

  13. W. Oates, and T. Flanagan, Thermodynamic Properties of Regular Interstitial Solutions, J. Mat. Sci., 1981, 16, p 3235

    Article  ADS  Google Scholar 

  14. T. Flanagan, D. Wang, and S. Luo, Thermodynamics of H in Disordered Pd-Ag Alloys from Calorimetric and Equilibrium Pressure–Composition–Temperature Measurements. J. Phys. Chem. C, 2007, 111, p 10723-10735

    Article  Google Scholar 

  15. E. Raub, H. Beeskow, and D. Menzel, Palladium Rhodium Alloys and Allotropy of Rhodium, Z. Metallkde, 1959, 50, p 426

    Google Scholar 

  16. T. Tkacz, High Pressure Studies of the Rhodium-Hydrogen System in Diamond Anvil Cell, J. Chem. Phys., 1998, 108, p 2084

    Article  ADS  Google Scholar 

  17. B. Baranowski, and K. Bochenska, The free energy and entropy of formation of nickel hydride, Zeit. Phys. Chem. N.F., 1965, 45, p 140

    Article  Google Scholar 

  18. B. Baranowski, S. Majchrzak, and T. Flanagan, High-Pressure Investigation of the Rhodium/Palladium/Hydrogen System, J. Phys. Chem., 1973, 77, p 35

    Article  Google Scholar 

  19. T. Flanagan, and J. Lynch, Thermodynamics of a Gas in Equilibrium with Two Nonstoichiometric Condensed Phases—Application to Metal/Hydrogen Systems, J. Phys. Chem., 1975, 79, p 463-814

  20. E. Wicke, and H. Brodowsky, in Hydrogen in Metals II, vol. 73, G. Alefeld, and J. Völkl, Ed., Springer, Berlin, 1978

  21. W. Luo, and T. Flanagan, Correlations between Phase Diagrams and Thermodynamic Data for Metal Hydride Systems, J. Phase Equilib, 1994, 15, p 20

    Article  Google Scholar 

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Authors and Affiliations

  1. Chemistry Department, University of Vermont, Burlington, VT, 05405, USA

    Ted B. Flanagan

  2. University of Salford, Salford, UK

    W. A. Oates

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  1. Ted B. Flanagan
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  2. W. A. Oates
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Correspondence to Ted B. Flanagan.

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Flanagan, T.B., Oates, W.A. Para-equilibrium Phase Diagrams, μH − XM, for Pd Alloy-H Systems. J. Phase Equilib. Diffus. 40, 285–290 (2019). https://doi.org/10.1007/s11669-019-00724-0

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  • DOI: https://doi.org/10.1007/s11669-019-00724-0

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