Role of Recrystallization of Tungsten in Formation of a Roughness of Its Surface Under Influence of Successive Action of Neutrons and Sputtering

Issues » Volume 38, Issue 8

A. I. Belyaeva$^{1}$, O. A. Galuza$^{1,2}$, I. V. Kolenov$^{2,3}$, A. O. Savchenko$^{1}$

$^{1}$National Technical University ‘Kharkiv Polytechnic Institute’, 21 Kyrpychov Str., 61002 Kharkiv, Ukraine
$^{2}$Institute of Electrophysics and Radiation Technologies NAS of Ukraine, 28 Chernyshevsky Str., 61002 Kharkiv, Ukraine
$^{3}$O.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)

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