X-ray diffraction study of thermal parameters of Pd, Pd–Ag and Pd–Ag–Cu alloys as hydrogen purification membrane materials
High temperature X-ray diffraction measurements were carried out for pure palladium and
palladium-rich alloys of compositions Pd 0.77 Ag 0.23 and Pd 0.77 Ag 0.10 Cu 0.13 in the
temperature range of 298–1023 K at an interval of 50 K. The lattice parameters, coefficient of
thermal expansion and X-ray Debye temperature of these materials were calculated as a
function of temperature from the XRD data. The lattice parameter of Pd 0.77 Ag 0.23 alloy
was found to be higher than that of palladium, whereas the lattice parameter of Pd 0.77 Ag …
palladium-rich alloys of compositions Pd 0.77 Ag 0.23 and Pd 0.77 Ag 0.10 Cu 0.13 in the
temperature range of 298–1023 K at an interval of 50 K. The lattice parameters, coefficient of
thermal expansion and X-ray Debye temperature of these materials were calculated as a
function of temperature from the XRD data. The lattice parameter of Pd 0.77 Ag 0.23 alloy
was found to be higher than that of palladium, whereas the lattice parameter of Pd 0.77 Ag …
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