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Information × Registration Number 0226U001780, (0124U000703) , R & D reports Title Layered crystal-quasi-crystal systems for radiation-thermal protection in nuclear/thermonuclear power (research and improvement) popup.stage_title Дослідження впливу радіаційнотермічного опромінення на характеристики шаруватих структур. Head Malykhin Serhii V., Доктор фізико-математичних наук Registration Date 30-01-2026 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description1 The purpose of the work is to establish new effects and regularities of the interaction of W/Ti-Zr-Ni quasi-crystalline functional film systems on the steel surface and hydrogen plasma of a thermonuclear reactor and hydrogen and helium ions; determination of a better and more radiation-resistant construction of a layered system. popup.description2 Based on experimentally observed results of X-ray diffraction, scanning and transmission electron microscopy, the following effects stimulated by plasma irradiation were identified: 1. During irradiation, the quasi-crystalline phase of the coating was saturated with hydrogen in an amount of up to 1.2 H/at.Me with the formation of a solid solution. 2. The effect of hydrogen release from a solid solution based on a quasi-crystalline phase (decay of a supersaturated solid solution) with the formation of spherical pores in the coating volume and blisters on the surface was observed. 3. Recrystallization of the quasi-crystalline phase. 4. A stimulated local phase transformation with the formation of a phase of 2/1 crystalline approximant from a quasi-crystalline phase, which was observed near pores ≥ 200 nm in size, around which compressive stresses arise. 5. Irradiation with hydrogen plasma leads to a significant reduction in compressive stresses and, in some cases, to the formation of tensile stresses in the tungsten layers. Product Description popup.authors Vadym O. Makhlai Viktor M. Liubov Ihor A. Kopylets Valentyna M. Tupikina Viktoriia A. Sevriukova Serhii V. Surovytskyi popup.nrat_date 2026-01-30 Close