Layered Composite Hydrogenated Films of Zirconium and Niobium: Production Method and Testing Using Thermo EMF (Thermoelectric Method); Russian Journal of Nondestructive Testing; Vol. 60, iss. 8

Layered Composite Hydrogenated Films of Zirconium and Niobium: Production Method and Testing Using Thermo EMF (Thermoelectric Method); Russian Journal of Nondestructive Testing; Vol. 60, iss. 8

Dades bibliogràfiques
Parent link:Russian Journal of Nondestructive Testing.— .— New York: Springer Science+Business Media LLC.
Vol. 60, iss. 8.— 2024.— P. 21-31
Autor principal: Larionov V. V. Vitaliy Vasilyevich
Altres autors: Laptev R. S. Roman Sergeevich, Lider A. M. Andrey Markovich
Sumari:Title screen
Layered materials incorporating hydrogen were obtained using Nb/Zr films with varying numbers of layers from 50 to 100. The films were deposited on a silicon substrate using a vacuum magnetron sputtering method on a dedicated setup. The film thickness varied from 10 to 50 nm. The resulting material was hydrogenated with protons on a TPU electrostatic generator with an energy of up to 1.2 MeV. The deposition modes for nanoscale metallic multilayer Zr/Nb systems were determined: for a Zr target the specific power of the sputtering system was 37.9 W/cm2, and for a Nb target it was 26.4 W/cm2. A coating with clear boundaries between individual layers of zirconium and niobium was obtained. It was shown that the optimal conditions for studying nanoscale Zr/Nb layers are a pressure of 700 Pa, a power of 40 W, a frequency of 2 kHz, and a plasma filling factor of 12.5% for coatings with individual layer thicknesses of 100 nm. For coatings with layer thicknesses from 10 to 50 nm, the optimal conditions are a pressure of 650 Pa, a power of 40 W, and a frequency of 1 kHz. The thermo EMF method (GOST (State Standard) 25315–82) was used for testing. It was found out that after proton irradiation, an intensive accumulation of hydrogen atoms occurs near the interfaces; it reduces the structure defectiveness and entails a change in the thermo EMF up to the inversion of its sign. The hydrogen distribution is predominantly bimodal, with local maxima in hydrogen concentration observed at the Nb/Zr interfaces, while accumulation at the Zr/Nb interface is considerably lower. Hydrogen localization near interfaces primarily occurs around zirconium
Текстовый файл
AM_Agreement
Idioma:anglès
Publicat: 2024
Matèries:
электронный ресурс
труды учёных ТПУ
films
proton hydrogenation
zirconium
niobium
testing
thermo EMF
Accés en línia:https://doi.org/10.1134/S106183092470075X
Format: MixedMaterials Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=678251

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