Publication: Tungsten wires with steel matrix composite: wetting and infiltration by steel melt
Дата
2025
Авторы
Popov, N.
Suchkov, A.
Zharkov, M.
Kirillova, V.
Bazhenov, A.
Dzhumaev, P.
Vertkov, A.
Sevryukov, O.
Journal Title
Nuclear Energy and Technology (NUCET)
Journal ISSN
Volume Title
Nuclear Energy and Technology (NUCET)
Издатель
НИЯУ МИФИ
Аннотация
Lithium-based capillary porous systems (CPS) made of tungsten mesh are a part of the most prospective approach to plasma facing components. Currently, tungsten mesh as a part of the CPS is mounted directly on the experimental assembly without a proper joining with a substrate. Tungsten mesh filled with steel could be used as a base structure for the CPS. The experiment considers the wetting of tungsten by steel melt and the features of short- and long-term interaction between the two materials. Wetting was studied by improved sessile drop experiment. The results show that an average contact angle is 69° for SS316LN and 83.2° for SS420 melt on tungsten substrate with a temperature of 500–650 °C. Tungsten-steel composite was manufactured by infiltration of tungsten mesh with a steel melt. As a result of an active dissolution of tungsten in steel melt, (Fe,Cr)7W6 interaction layer with a thickness up to 10 µm forms around tungsten. Optimal structure with the thinnest intermetallic layer is obtained in the zones with the lowest temperature and the highest cooling speed.
Описание
Ключевые слова
Armor block , Wetting , Composite , Tungsten , Steel
Цитирование
Popov N, Suchkov A, Zharkov M, Kirillova V, Bazhenov A, Dzhumaev P, Vertkov A, Sevryukov O (2025) Tungsten wires with steel matrix composite: wetting and infiltration by steel melt. Nuclear Energy and Technology 11(1): 43–53. https://doi. org/10.3897/nucet.11.139558