Structure, Texture, and Substructure of Foil in Sequential Rolling Steps of Cu–36.4 at % Pd Alloy

Иевлев, В. М.; Донцов, А. И.; Горбунов, С. В.; Il’inova, T. N.; Канныкин, С. В.; Prizhimov, A. S.; Рошан, Н. Р.; Солнцев, К. А.

doi:10.1134/s0020168521110054

Cited by 2 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The necessity of deviation of the composition from the equiatomic ratio towards increasing copper content was demonstrated to be a necessary condition for β-phase generation [14]. The deformation effect during ordering was established [15,16]. It was found that the phase composition and texture of the Pd-Cu alloy formed in successive steps of foil rolling are controlled by the transformation mechanism [17].…”

Section: Introductionmentioning

confidence: 99%

“…The substructure of two-phase films is studied at the submicrometer level by transmission electron microscopy (TEM) [13,16]; however, there is still a lack of experimental data on the structural organization of α and β phases at the nano-scale level. Meanwhile, these data are needed for the understanding of the nature of observed effects and substantiation of the practically important properties of B2-ordered systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract