Review of Irradiation Damage Behavior of Tungsten Exposed to Plasma in Nuclear Fusion
Received date: 2023-02-27
Revised date: 2023-05-02
Online published: 2023-05-30
Supported by
National Natural Science Foundation of China(12105314)
Tungsten is the most promising candidate as plasma facing material in nuclear fusion reactors because of its high melting point, high thermal conductivity, low sputtering rate, and low tritium retention. However, when exposed to low-energy high flux plasma, tungsten undergoes micro/nanoscale damage, such as surface blistering and surface nanostructure, on its surface. These damage structures can degrade thermal and mechanical properties, thereby adversely affecting the reservice performance of tungsten. In this paper, the current research status of the damage behavior of tungsten when exposed to H/D plasma was focused. The research progress of the mechanisms of surface blistering nucleation and growth, as well as the effects of irradiation defects on thermal conductivity, mechanics, and service performance was summarized. These data can provide a theoretical basis for optimizing the microstructure of tungsten materials, thus improving its service performance and extending its service life.
Key words： nuclear fusion; tungsten; plasma; irradiation damage; service performance
LIU Wei , CHEN Wanqi , MA Menghan , LI Kailun . Review of Irradiation Damage Behavior of Tungsten Exposed to Plasma in Nuclear Fusion[J]. Acta Metall Sin, 2023 , 59(8) : 986 -1000 . DOI: 10.11900/0412.1961.2023.00078
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