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|Title:||Erosion properties of tungsten and WTa5 alloy exposed to repetitive QSPA plasma loads below melting threshold|
|Authors:||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.
Sadowski, M. J.
|Keywords:||tungsten; heat load; thermo-mechanical properties; plasma loads|
|Publisher:||Kharkiv Institute of Physics and Technology|
|Citation:||Erosion properties of tungsten and WTa5 alloy exposed to repetitive QSPA plasma loads below melting threshold / V. A. Makhlai [et al.] // Problems of atomic science and technology. Ser. : Plasma physics. – 2018. – No. 6 (118). – P. 59-62.|
|Abstract:||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.|
|Appears in Collections:||Кафедра "Фізика металів і напівпровідників"|
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