Abstract
Gorsky-effect experiments have been carried out on single crystalline alpha '-PdHx alloys with 0.56<x<0.74 between 300 and 600K using a capacitance method for strain measurements. From the temperature dependence of the reciprocal relaxation strength one deduces negative values for the spinodal temperature in agreement with the predictions of a semi-rigid band model for the electronic band-structure contribution to the total energy of the system. The long-range diffusion coefficients derived from the anelastic relaxation time show a good consistency with results obtained by other workers in complementary temperature and/or concentration regimes. Arrhenius plots of the reduced or tracer diffusion coefficient lead to activation energies, which are not more than 15% larger than the values found in dilute alpha -phase PdHx alloys. The concentration dependence of the tracer diffusion varies more rapidly than 1-x. This deviation from a simple site-blocking model is an indication for the existence of hydrogen-hydrogen cooperative effects involving a short-range repulsive interaction between the protons.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
