Multiphase materials based on the Fe73.9Si15.5Cu1Nb3B6.6 alloy obtained by dry and wet high-energy ball milling processes

JOURNAL OF ALLOYS AND COMPOUNDS

卷:864

Article

Lopez-Sanchez, Jesus^1,2,3  Navarro, Elena^1,4  Rodriguez-Granado, Freddy¹  Serrano, Aida⁵  Marin, Pilar^1,4 

[1] UCM ADIF, Inst Magnetismo Aplicado, Las Rozas 28230, Spain

[2] ESRF European Synchrotron, Spanish CRG BM25 SpLine, F-38000 Grenoble, France

[3] Inst Ciencia Mat Madrid ICMM CSIC, Madrid 28049, Spain

[4] Univ Complutense Madrid UCM, Dept Fis Mat, Madrid 28040, Spain

[5] Inst Ceram & Vidrio ICV CSIC, Dept Electroceram, Madrid 28049, Spain

关键词: Amorphous materials;    Fe-based alloys;    High-energy milling;    alpha-Fe3Si and beta-FeSi2 phases;    Wet milling;    Multiphase materials;   

DOI  :  10.1016/j.jallcom.2020.158136

来源: Elsevier

【 摘 要 】

Novel hybrid materials based on the soft nanocrystalline Fe73.9Si15.5Cu1Nb3B6.6 alloy are designed in this work with the purpose of reducing its particle size and developing different compositional, structural, and magnetic properties depending on the high-energy ball milling time and route employed. Innovative processes combining mixer, vibratory and planetary motions at the same time are carried out under a dry and a wet route, obtaining reduced sub-micron particle size distributions after 2 h of milling. The established approach takes advantage of the nature of amorphous materials to promote the formation of different hybrid compounds and it is supported by the high virulence of the milling process performed at 2000 rpm. On the one hand, the results obtained by the dry route show a structural and magnetic evolution dominated by the presence of ferromagnetic alpha-Fe3Si nanocrystals. On the other hand, the wet approach that is supported by glycerol evidences the destruction of the alpha-Fe3Si with the milling time in favor of the non-magnetic beta-FeSi2 phase, obtaining a new functionality for the Fe73.9Si15.5Cu1Nb3B6.6 alloy. Their properties as soft magnetic alloys are evaluated and compared depending on the followed route, opening up a new physicochemical method in the development of multiphase compounds with potential applications. With this work, a controlled formation of different hybrid compounds is achieved, revealing an effective mechanism to introduce functional materials with different properties embedded in an amorphous ferromagnetic matrix. (C) 2020 Elsevier B.V. All rights reserved.

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