The Effect of Rapid Photon Treatment of the PdCu Solid Solution Foil of Near-Equiatomic Composition

Иевлев, В. М.; Солнцев, К. А.; Serbin, O. V.; Донцов, А. И.; Sinetskaya, D. A.; Рошан, Н. Р.

doi:10.1134/s0012500819110053

Cited by 4 publications

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“…An X-ray diffraction study of the β↔α transformation in a hydrogen medium showed that the β-phase boundary shifts towards higher temperatures by 150-200 • C [18,19].…”

Section: Introductionmentioning

confidence: 99%

Dependence of the Atomic Structure of Solid Solutions in the Pd-Cu System Ordered According to the B2 Type on the Composition

et al. 2022

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Owing to exceptionally high selectivity, membranes based on palladium alloys are widely used for obtaining high-purity hydrogen. An important issue for providing high hydrogen permeability of the membranes is to form the required phase composition. The structural organization of the solid solutions consisting of Cu–36.4 at .% Pd and Cu–50 at .% Pd were studied by X-ray diffraction (XRD), electron diffraction (ED), high-resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDXS). It was found that the former composition can be ordered in the temperature range of 300–400 °C and in the heating (up to 800 °C)–cooling cycle. In the presence of excess Cu atoms (27.2%), this structure can be represented by CsCl type structural units (β-phase) and distributed body center cubic (BCC) copper structural units in the corresponding concentration dose. The formation of a single crystal ordered phase within the mosaic blocks of the disordered phase was established. Experimental evidence was obtained for the separation of the α-phase solid solution in the elemental composition; the very low rate of ordering inherent in this system was attributed to this effect. The hydrogen permeability of a foil of the equiatomic composition was described.

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“…An X-ray diffraction study of the β↔α transformation in a hydrogen medium showed that the β-phase boundary shifts towards higher temperatures by 150-200 • C [18,19].…”

Section: Introductionmentioning

confidence: 99%