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Indexed by:期刊论文

Date of Publication:2016-05-15

Journal:NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

Included Journals:SCIE、EI

Volume:375

Page Number:79-86

ISSN No.:0168-583X

Key Words:H+ ion beam; Radiation damage; Metallic glass; Metallic W

Abstract:In this study, use of 40-keV H+ ion for irradiating metallic glass Fe80Si7.43B12.57 and Ni62Ta38 as well as metallic tungsten (W) at fluences of 1 x 10(18) and 3 x 10(18) ions/cm(2), respectively, was investigated. At the fluence of 1 x 10(18) ions/cm(2), a crystalline layer appeared in metallic glass Fe80Si7.43B12.57, with alpha-Fe as the major crystalline phase, coupled with a little Fe2B, Fe3B, and metastable beta-Mn-type phase. Fe80Si7.43B12.57 exhibited good soft magnetic properties after irradiation. At the fluence of 3 x 10(18) ions/cm(2), Ni62Ta38 was found to be amorphous-based, with a little mu-NiTa and Ni3Ta phases. No significant irradiation damage phenomenon appeared in metallic glasses Fe80Si7.43B12.57 and Ni62Ta38. Blistering, flaking, and other damage occurred on the surface of metallic W, and the root-mean-square (RMS) roughness increased with the increase of fluence. Metallic glass Ni62Ta38 exhibited better resistance to H+ irradiation than Fe80Si7.43B12.57, both of which were superior to the metallic W. (C) 2016 Elsevier B.V. All rights reserved.