A new strategy to fabricate nanoporous iron-based metallic glasses: Selective phase tailoring of amorphous-nanocrystalline composite alloys through electrochemical dissolution. (May 2017)

• Record Type: Journal Article
• Authors: Jin, Yu; Li, Ran; Xu, Hongjie; Chen, Xiao-Bo; Zhang, Tao
• Is Part Of: Scripta materialia. Number 133(2017)
• Page Start: 14
• Page End: 18
• Publication Date: 2017-05
• Subjects: Iron alloys -- Amorphous materials -- Nanocrystalline metal -- Selective dissolution -- Rapid solidification; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.01.029
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A feasible strategy was developed to fabricate nanoporous iron-based metallic glasses (npFe-MGs) by selective dissolution of the electrochemically active α-Fe nanocrystalline phase from Fe-Nb-B composite alloys. The yielded npFe-MGs exhibited a ligament size of ~ 75 nm and a pore size of ~ 120 nm. Morphology of the npFe-MGs ( i.e. pore size and pore number) could be tailored by the selection of precursor alloys prepared by varying rapid solidification conditions. Such a selective phase-tailoring approach provides new insights to the preparation of metallic glasses with promising nanoporous structure to satisfy a variety of engineering requirements, e.g. catalysis, microwave absorption, capacitor, etc . Graphical abstract: