Characteristics of hydride-like segregates of hydrogen at dislocations in palladium

• DOI: 10.1070/pu2001v044n11abeh000973
• Publication Date: 2002-08-24T21:29:52Z
• Authors: Yurii S Nechaev
• Keywords: Palladium hydride; Hardening (computing)

On the basis of multifactor analysis most representative experimental data on solubility, electrical resistance, and diffusivity hydrogen in palladium specimens with high low dislocation densities, it has been shown that structure, composition, diameter (up to several nm), contribution thermodynamic diffusion characteristics hydride-like segregates at dislocations can vary wide limits depending concentration activity dissolved normal lattice metal. The formation segregation phases occurs degrees undersaturation solid solutions respect hydride precipitation palladium. This means a specific phase diagram be considered for 'hydrogen — near-dislocation Pd nanoregions' system, comparison conventional hydrogen–palladium diagram. results obtained used description apparent distribution between crystal defect regions produced using different processing treatment methods. In particular, interpretation influence physical mechanical properties materials, also revealing micromechanisms ways optimization regimes thermal-hydrogen governing hydrogen-induced transformation hardening palladium-based alloys.