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Information × Registration Number 0221U100518, 0119U101375 , R & D reports Title Damage and modification effects in prospective materials of nuclear and thermonuclear power engineering under the influence of powerful plasma loads. popup.stage_title Head Makhlai Vadym O., Кандидат фізико-математичних наук Registration Date 07-01-2021 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  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. The cracking thresholds were evaluated for tungsten samples with different microstructure in the course of QSPA Kh-50 repetitive plasma loads. No damage has been observed on the exposed surfaces under 0.1 MJ/m2. Nevertheless, cracks were detected in the bulk of irradiated tungsten (with longitudinal grain orientation). Increasing heat load up to 0.2 MJ/m2 caused the damaging of all types of tungsten targets. The observed cracks propagate to the bulk mainly transversely and parallel to the irradiated surface. Effect of the subsequent exposure with LHD divertor plasma on the tungsten samples was analyzed. Product Description popup.authors Eliseev Dmitry V Yeromin Valerii AKSYNOV Nikolay M Basargin Valerii O. BIRKA Oleg V Vasilenko Ruslan L. VOLKOVA Yulia Ye Harkusha Ihor Ye Garkusha Natalija M HERASHCHENKO Stanislav S. Kalchenko Oleksandr S. KULIK Mykola V LADIGINA Marina S Lebedev Serhiy I MARCHENKO Anna K MAKHLAY Vadim O MEERKOVA Tatiana M Myronova Liudmyla M. Petrov Yuriy V. Seleznova Nataliia Ye. Skoryna Olena V SOLYAKOV Dmitry G STALTSOV Valery V Tkachenko Lidiya K. CHEBOTAROV Vladimir V. Shevchuk Pavlo B. Yakovleva Vitaliya V. popup.nrat_date 2021-03-17 Close