kaz29Вестник Казахстанско-Британского технического университетаHerald of the Kazakh-British Technical University1998-66882959-8109Казахстанско-Британский Технический Университет10.55452/1998-6688-2026-23-3-388-397kaz29-3200Research ArticleФИЗИЧЕСКИЕ НАУКИPHYSICAL SCIENCESИССЛЕДОВАНИЕ ИЗМЕНЕНИЯ МИКРОТВЕРДОСТИ И МАССЫ ПРЕДВАРИТЕЛЬНО НАГРЕТОГО ВОЛЬФРАМА ПОД ВОЗДЕЙСТВИЕМ ИМПУЛЬСНОЙ ПЛАЗМЫUSA STUDY OF CHANGES IN MICROHARDNESS AND MASS OF A PREHEATED TUNGSTEN UNDER THE INFLUENCE OF PULSED PLASMAhttps://orcid.org/0000-0002-3277-2086ТаженА. Б.TazhenA. B.

PhD

Алматы

PhD

Almaty

Aigerim@physics.kzhttps://orcid.org/0009-0003-4108-0879ХолмирзаевА. Н.KholmirzayevA. N.

Докторант

Алматы

PhD student

Almaty

kholmirzayev.abdulla@gmail.comhttps://orcid.org/0000-0001-7903-8674УсеновЕ. А.UssenovY. A.

PhD

Принстонская лаборатория физики плазмы

Принстон

PhD

Princeton Plasma Physics Laboratory

Princeton

yerbolat@physics.kzhttps://orcid.org/0000-0002-0724-1793ДосболаевМ. К.DosbolayevM. K.

К.ф.-м.н., профессор

Алматы

Cand. Phys. Math. Sc., Prof.,

Almaty

merlan@physics.kzhttps://orcid.org/0009-0009-2301-1152РамазановТ. С.RamazanovT. S.

Д.ф.-м.н.

Алматы

Dr. Phys. Math. Sc., Prof.

Almaty

ramazan@physics.kzНациональная нанотехнологическая лаборатория открытого типа, КазНУ им. аль-ФарабиКазахстанNatiоnal Nanotechnоlogy Laboratоry of Open Type, al-Farabi Кazakh National UniversityKazakhstanПринстонский университетСоединённые Штаты АмерикиPrinceton UniversityUnited States202626092026233388397Copyright © Тажен А.Б., Холмирзаев А.Н., Усенов Е.А., Досболаев М.К., Рамазанов Т.С., 20262026Тажен А.Б., Холмирзаев А.Н., Усенов Е.А., Досболаев М.К., Рамазанов Т.С.Tazhen A.B., Kholmirzayev A.N., Ussenov Y.A., Dosbolayev M.K., Ramazanov T.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.kbtu.edu.kz/jour/article/view/3200

В статье представлены результаты экспериментального исследования изменений микротвердости и массы предварительно нагретой вольфрамовой мишени, основного материала-кандидата для первой стенки и дивертора, под воздействием импульсного плазменного потока с длительностью приблизительно 0,2 мс. Эксперименты проводились в виде серии из 13 импульсов при плотности энергии 1,1 МДж/м2 и плотности мощности около 5,5 ГВт/м2. Микротвердость измерялась с помощью твердомера HVS-1000B; масса мишени до и после воздействия плазмы измерялась с помощью прецизионных весов CPA225D. Показано, что микротвердость вольфрамовой мишени остается практически неизменной даже при максимальной дозе облучения (до 39 импульсов), а наблюдаемое изменение находится в пределах погрешности измерения, что свидетельствует о структурной стабильности поверхностного слоя. При этом зафиксировано увеличение массы мишени (до 31 мг), вероятно, вызванное загрязнением и повторным осаждением материала внешних конструктивных элементов. Анализ методом энергодисперсионной спектроскопии (ЭДС) выявил интенсивные полосы Cu, Zn, Ni и C в частицах пыли, повторно осажденных на поверхности мишени. Результаты показывают, что эти инородные компоненты оказывают существенное влияние на морфологию поверхности и должны учитываться при интерпретации механизмов повреждения вольфрамом.

The paper presents the results of an experimental investigation of changes in the microhardness and mass of a preheated tungsten target, the primary candidate material for the first wall and divertor, subjected to a pulsed plasma flow of approximately 0.2 ms duration. The experiments were conducted as a series of 13 pulses, each with an energy density and power density of approximately 1.1 MJ/m2 and 5.5 GW/m2 , respectively. Microhardness was measured using an HVS-1000B hardness tester; the target mass before and after plasma exposure was measured using a CPA225D precision balance. It is shown that the microhardness of the tungsten target remains virtually unchanged even at the maximum irradiation dose (up to 39 pulses), and the observed change is within the measurement error, which indicates the structural stability of the surface layer. At the same time, an increase in the target mass (up to 31 mg) was recorded, probably caused by contamination and redeposition of the material of external structural components. Energy-dispersive spectroscopy (EDS) analysis revealed Cu, Zn, Ni, and C lines in dust particles redeposited on the target surface. The results indicate that these foreign components have a significant impact on surface morphology and should be considered when interpreting tungsten damage mechanisms.

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The authors declare that there are no conflicts of interest present.