Кафедри

Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/35393

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2017 - 20202

Налаштування

Автор: search.filters.author.Garkusha, I. E.Ключові слова: search.filters.subject.X-ray diffraction

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Зараз показуємо 1 - 2 з 2
  • Ескіз
    Документ
    Behavior of the Ti-Zr-Ni thin film containing quasicrystalline and approximant phases under radiative-thermal action in transition modes
    (Kharkiv Institute of Physics and Technology, 2020) Malykhin, S. V.; Makhlai, V. A.; Surovitskiy, S. V.; Garkusha, I. E.; Herashchenko, S. S.; Kondratenko, V. V.; Kopylets, I. A.; Zubarev, Evgeniy N.; Borisova, S. S.; Fedchenko, A. V.
    X-ray diffraction and SEM microscopy were used to study the structural and phase changes in a thin film obtained by magnetron sputtering of a Ti52Zr30Ni18 target (at.%) on a steel substrate under the radiation-thermal influence of pulsed hydrogen plasma on an QSPA Kh-50 accelerator. A technique has been worked out for the formation of the quasicrystalline and crystal-approximant phases as a result of high-speed quenching using pulsed action with a heat load of 0.6 MJ/m². The changes in the contents of these phases as well as in their structure and substructure parameters were studied during isothermal vacuum annealing at a temperature of 550 °C and also as a result of irradiation with 5 plasma pulses in the range of heat load from 0.1 to 0.4 MJ/m². The quasicrystalline phase was found to be resistant to irradiation with hydrogen plasma.
  • Ескіз
    Документ
    On application of X-ray approximation method for studying the substructure of sufficiently perfect samples
    (Institute for Single Crystals, 2017) Malykhin, S. V.; Garkusha, I. E.; Makhlay, V. A.; Surovitsky, S. V.; Reshetnyak, M. V.; Borisova, S. S.
    The technique of X-ray diffraction investigation of coherence length and micro-strain level using approximation of diffraction line profiles by Gaussian and Cauchy functions as well as by harmonic analysis has been worked out for tungsten samples with quite perfect structure. The importance of right choice of a standard for obtaining the reasonable measurement results has been demonstrated. For the first approximation the possibility to use the spectral line width for calculation of the reflection true (physical) broadening has been shown. The contributions of basic instrumental factors into the reflection geometric broadening were estimated.