Open AccessTHE MICROSTRUCTURE AND MAGNETIC PROPERTIES STUDIES OF NANOCRYSTALLINE Fe73.5Cu1Mo3Si13.5B9 ALLOY
Author(s) -
Tao Liu,
XU Zuxiong,
Ruixin Ma,
Jian Song,
Yang Guobin
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.528
Subject(s) - nanocrystalline material , materials science , annealing (glass) , amorphous solid , alloy , microstructure , phase (matter) , hyperfine structure , condensed matter physics , amorphous metal , anisotropy , mössbauer spectroscopy , analytical chemistry (journal) , nuclear magnetic resonance , metallurgy , crystallography , nanotechnology , optics , atomic physics , chemistry , physics , organic chemistry , chromatography
The Mossbauer spectra were measured at room temperature for the nanocrystalline Fe73.5Cu1Mo3Si13.5B9 alloys at the as-cast state and the anneals at various temperatures. The results of measurements demonstrate the co-existence of the α-Fe(Si) nanocrystalline phase and interficial amorphous phase in the crystallized alloys. The variations of the hyperfine field and relative areas of these phases with the annealing temperature are attributed to the annealing-induced diffusion of Cu,Mo, B and their redistributions in these phases.30 percent of iron contained in the amorphous phase was found and this state of affairs corresponds to the best magnetic properties. The two-phase, disordered anisotropy model makes clear, that a certain amount of amorphous phase was essential to the excellent soft magnetic properties of nanocrystalline alloys. The deterioration of the properties is due to the existence of Fe2B phase .