Role of Recrystallization of Tungsten in Formation of a Roughness of Its Surface Under Influence of Successive Action of Neutrons and Sputtering
A. I. Belyaeva1, O. A. Galuza1,2, I. V. Kolenov2,3, A. O. Savchenko1
1National Technical University ‘Kharkiv Polytechnic Institute’, 21 Kyrpychov Str., 61002 Kharkiv, Ukraine
2Institute of Electrophysics and Radiation Technologies NAS of Ukraine, 28 Chernyshevsky Str., 61002 Kharkiv, Ukraine
3O.Ya. Usikov Institute for Radiophysics and Electronics, NAS of Ukraine, 12 Academician Proskura Str., 61085 Kharkiv, Ukraine
Received: 20.07.2016. Download: PDF
The paper presents experimental study of surface-structure modification and optical-properties’ change of two types of tungsten (W-IG and W-rc) under impact of factors imitating operating conditions in International Thermonuclear Experimental Reactor (ITER): successive impact of neutrons and recharge atoms (sputtering). For the first time, the fact is determined that the W-IG recrystallization leads to stabilization of both surface structure and, as a result, optical properties. The comprehensive study of radiation-induced transformations of the surface reveals physical mechanisms of its erosion under the ITER factors and results in creation of the roughness model. For the first time, a model of coexistence of two types of roughness on the W-IG surface and its transformations under recrystallization is grounded.
Key words: tungsten, W-rc, W-IG, ITER, recrystallization, neutrons, recharge atoms (sputtering), surface.
URL: http://mfint.imp.kiev.ua/en/abstract/v38/i08/1077.html
DOI: https://doi.org/10.15407/mfint.38.08.1077
PACS: 07.60.Hv, 68.35.Ct, 68.37.Hk, 78.20.Ci, 81.10.Jt, 81.40.Tv, 81.70.Fy
Citation: A. I. Belyaeva, O. A. Galuza, I. V. Kolenov, and A. O. Savchenko, Role of Recrystallization of Tungsten in Formation of a Roughness of Its Surface Under Influence of Successive Action of Neutrons and Sputtering, Metallofiz. Noveishie Tekhnol., 38, No. 8: 1077—1102 (2016) (in Russian)