Methodological notes

Self-oscillation processes during the structure relaxation of palladium-metal alloys (Pd—W) saturated with hydrogen

 a,  b,  a,  a
a Lomonosov Moscow State University, Department of Physics, Leninskie Gory 1 build. 2, Moscow, 119991, Russian Federation
b Sumy State University, ul. Rimskogo-Korsakova 2, Sumy, 244007, Ukraine

Some possibilities of studying real microscopic structures by X-ray kinetic techniques are considered. Taking variable-composition Pd-W alloys as examples, a comparative time dependence analysis of the X-ray diffraction pattern (i.e., of the intensity and width of diffraction maxima) is carried out for palladium-metal alloys relaxing after hydrogen saturation. It is shown that the dependences are of nonmonotonic — at some relaxation stages, of oscillatory — character. Analysis indicates that these dependences are due to the self-organisation effect operating during the diffusion evolution of an alloy structure having submicroscopic heterogeneity. The self-organisation mechanisms most likely for a system of local short-range order regions, hydrogen-containing clusters, defects, and hydrogen atoms are considered. Classes of materials allowing such phenomena are discussed.

Fulltext is available at IOP
PACS: 61.10.mY, 61.72.dD, 82.40.bJ
DOI: 10.1070/PU1995v038n03ABEH000077
Citation: Katsnel’son A A, Olemskoi A I, Sukhorukova I V, Revkevich G P "Self-oscillation processes during the structure relaxation of palladium-metal alloys (Pd—W) saturated with hydrogen" Phys. Usp. 38 317–323 (1995)
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Оригинал: Кацнельсон А А, Олемской А И, Сухорукова И В, Ревкевич Г П «Автоколебательные процессы при релаксации структуры насыщенных водородом сплавов палладий-металл (на примере Pd-W).» УФН 165 331–338 (1995); DOI: 10.3367/UFNr.0165.199503e.0331

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