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Indexed by:期刊论文

Date of Publication:2021-01-10

Journal:MATERIALS LETTERS

Volume:279

ISSN No.:0167-577X

Key Words:Intermetallic alloys and compounds; Ti5Si3 nanowire; Fabrication; Microstructure; Field emission property

Abstract:In this work, a novel casting-extraction method is proposed for fabrication of Ti5Si3 nanowires on a large scale. The Ti5Si3 nanowires were firstly synthesized in brass melt using Ti and Si as raw materials, and then extracted by electrochemical reaction. Analysis of microstructure reveals the as-prepared V nanowires possess a single-crystal D88 hexagonal crystal structure with a high aspect ratio of 250 +/- 70 and grow along the [0001] direction. Moreover, the Ti5Si3 nanowires exhibit promising superior field emission performance with a low turn-on field of 1.8 V/lm and threshold field of 2.7 V/lm, and a high field enhancement factor (beta) of 1556. (C) 2020 Published by Elsevier B.V.