Кафедра "Фізика металів і напівпровідників"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/4703

Офіційний сайт кафедри http://web.kpi.kharkov.ua/fmp

Від 2002 року кафедра має назву "Фізика металів і напівпровідників", попередня назва – кафедра металофізики.

Кафедра металофізики організована в 1930 році у складі фізико-механічного факультету ХММІ. Деканом факультету був у ті роки видатний вчений-фізик, академік Іван Васильович Обреїмов.

Кафедра входить до складу Навчально-наукового інституту комп'ютерного моделювання, прикладної фізики та математики Національного технічного університету "Харківський політехнічний інститут". За час існування кафедрою підготовлено близько 3000 інженерів, у тому числі і для зарубіжних країн.

У складі науково-педагогічного колективу кафедри працюють: 3 доктора та 2 кандидата фізико-математичних наук; 3 співробітника мають звання професора.

Переглянути

Результати пошуку

Зараз показуємо 1 - 10 з 12

Damaging of tungsten and tungsten–tantalum alloy exposed in ITER ELM-like conditions
(Elsevier Inc., 2016) Makhlai, V. A.; Garkusha, I. E.; Linke, J.; Malykhin, S. V.; Aksenov, N. N.; Byrka, O. V.; Herashchenko, S. S.; Surovitskiy, S. V.; Wirtz, M.
The damage of deformed double forged pure tungsten (W) and tungsten alloyed with 5 wt% tantalum (WTa5) have been studied in experimental simulations of ITER-like transient events with relevant surface heat load parameters (energy density up to 0.75 MJ/m 2 and the pulse duration of 0.25 ms) as well as particle loads (varied in wide range from 10 23 to 10 27 ion/m 2 s) with quasi-stationary plasma accelera- tor QSPA Kh-50. The plasma exposures were performed for the targets maintained at room temperature and preheated at 200 °C. The surface heat loads were either with no melting of W surface or above the melting threshold. The development of surface morphology of the exposed targets as well as cracking and swelling at the surface is discussed. Surface analysis was carried out with an optical microscopy and SEM. Surface modification and development of cracks led to increases of roughness of exposed surfaces. X-ray diffraction (XRD) has been used to study the micro-structural evolution of the exposed targets. The micro deformations of W and WTa5 are similar for targets exposed under similar conditions. The contri- bution of excess complexes of interstitial atoms in the formation of cracks after plasma irradiation was evaluated.
Erosion properties of tungsten and WTa5 alloy exposed to repetitive QSPA plasma loads below melting threshold
(Національний науковий центр "Харківський фізико-технічний інститут", 2018) Makhlai, V. A.; Aksenov, N. N.; Byrka, O. V.; Garkusha, I. E.; Herashchenko, S. S.; Malykhin, S. V.; Surovitskiy, S. V.; Wirtz, M.; Sadowski, M. J.
Materials in conditions of high power plasma loads: surface damage and modification
(Taras Shevchenko National University of Kyiv, 2018) Makhlai, V. A.; Aksenov, N. N.; Byrka, O. V.; Garkusha, I. E.; Chunadra, A. G.; Herashchenko, S. S.; Malykhin, S. V.; Sereda, K.; Surovitskiy, S. V.
The paper discusses main features of material response to the repetitive powerful plasma impacts caused either the damage mechanisms and erosion behaviour or modification of surface layer and alloying with plasma species, aimed at improvement of material performance. Influence of powerful plasma impacts on several materials used for the construction of energy systems, i.e. steels as well as tungsten coatings, and pure tungsten has been discussed.
Features of surface modification of copper-based alloys under powerful plasma exposures
(Національний науковий центр "Харківський фізико-технічний інститут", 2018) Byrka, O. V.; Aksenov, N. N.; Chunadra, A.; Herashchenko, S. S.; Makhlai, V. A.; Malykhin, S. V.; Sereda, K.; Surovitskiy, S. V.; Garkusha, I. E.
Alloying and modification of materials relevant to fusion and fission energy
(Publications Office of the European Union, 2017) Makhlai, V. A.; Garkusha, I. E.; Byrka, O. V.; Taran, V. S.; Herashchenko, S. S.; Malykhin, S. V.
Modification, alloying and sputtering tests of Cr18Ni10Ti and EUROFER steels
(Institute of Energy and Climate Research - Plasma Physics, 2017) Makhlai, V. A.; Garkusha, I. E.; Taran, V. S.; Voitsenya, V.; Herashchenko, S. S.; Aksenov, N. N.; Byrka, O. V.; Solyakov, D.; Solodovchenko, S.; Malykhin, S. V.; Surovitskiy, S. V.; Terentyev, D.
Damage of plasma-facing materials exposed to powerful plasma streams in ITER-relevant conditions
(Київський національний університет ім. Тараса Шевченка, 2016) Makhlai, V. A.; Aksenov, N. N.; Byrka, O. V.; Garkusha, I. E.; Herashchenko, S. S.; Malykhin, S. V.
The damage of tungsten (W) which is chosen as main plasma facing material relevant to International Thermonuclear Experimental Reactor (ITER) have been studied in experimental simulations of ITER-like transient events with quasi-stationary plasma accelerator QSPA Kh-50. Heat loads to exposed surfaces achieved 1 MJ/m2 (the pulse duration of 0.25 ms). The large and fine cracks appeared in result of plasma impacts. Heat loads accompanied by pronounced melting of tungsten cause an intense ejection of liquid droplets and solid dust. Re-deposition of the eroded material is observed also. The most important erosion mechanism connected with the edge effects in 3D geometry of targets has been studied. Such mechanism results in an increase in the size of the emitted droplets as compared with those emitted from a flat surface.
Damage features of tungsten and tungsten coatings exposed to QSPA powerful plasma streams in ITER-like conditions
(Pontificia Università Urbaniana, Italy, 2016) Makhlai, V. A.; Aksenov, N. N.; Byrka, O. V.; Garkusha, I. E.; Herashchenko, S. S.; Linke, J.; Malykhin, S. V.; Surovitskiy, S. V.; Taran, V. S.; Wirtz, M.
Structural-phase changes in thin films and surface layers of Ti₄₁.₅Zr₄₁.₅Ni₁₇ alloy, stimulated by radiation-thermal impact of hydrogen plasma
(Kharkiv Institute of Physics and Technology, 2019) Malykhin, S. V.; Makhlai, V. A.; Surovitskiy, S. V.; Borisova, S. S.; Herashchenko, S. S.; Kondratenko, V. V.; Kopylets, I. A.; Baturin, A. A.; Terentyev, D.
X-ray diffraction and SEM microscopy were used to study structural and phase changes in the surface layers of a Ti₄₁.₅Zr₄₁.₅Ni₁₇ alloy bulk sample (target) and a thin film (deposited by magnetron sputtering of the target) under radiation-thermal action of pulsed hydrogen plasma with a thermal load of 0.6 MJ/m² in QSPA Kh-50 installation. It is established that the irradiation results in the formation of a two-phase state: the icosahedral quasicrystalline phase together with the phase of the 1/1 approximant crystal (W-phase). As a result of isothermal (550°C) annealing, the content of the quasicrystalline phase increases.
Erosion properties of tungsten and WTa5 alloy exposed to repetitive QSPA plasma loads below melting threshold
(Kharkiv Institute of Physics and Technology, 2018) Makhlai, V. A.; Herashchenko, S. S.; Aksenov, N. N.; Byrka, O. V.; Garkusha, I. E.; Malykhin, S. V.; Surovitskiy, S. V.; Kulik, N. V.; Staltsov, V. V.; Lebedev, S. I.; Shevchuk, P. B.; Wirtz, M.; Sadowski, M. J.
The damage of deformed double forged pure tungsten (W) and tungsten alloyed with 5 wt.% tantalum (WTa5) have been studied in experimental simulations of ITER-like transient events (surface heat load of 0.45 MJ/m² and the pulse duration of 0.25 ms) with quasi-stationary plasma accelerator QSPA Kh-50. The plasma exposures were performed for targets maintained at room temperature and preheated at 200 or 300°C. The large and fine cracks appeared in result of plasma impacts. The high number of repetitive plasma loads below the melting threshold led to the clear degradation of thermo-mechanical properties of the affected surface layers on tungsten. Comparative analysis of the cracks propagation to the bulk is presented for both W and WTa5 samples.