Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
64 (1988), S. 5723-5725
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A new metastable compound has been obtained during the crystallization of Fe-rich Nd-Fe-B amorphous alloys. The composition range for the precipitation of this phase is Nd4.5±1Fe82.5±5B12.5±3.5. A single phase, however, is obtained in a much restricted composition range. The amorphous alloy has a Curie temperature of 466 K and crystallizes at 852 K (for a heating rate of 40 K min−1 ) into the new metastable compound which has a body-centered-cubic structure with a=1.238 nm. Its Curie temperature is 548 K. Upon heating above 975 K, this phase transforms into Nd2Fe14B, NdFe12B6, and α-Fe. It appears that it is necessary to start from a truly amorphous state in order to form the new phase, otherwise, a competing body-centered-cubic phase Nd2Fe23B3 forms. X-ray diffraction and Mössbauer spectroscopy data are also presented and compared to that of Nd2Fe23B3.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.342238
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