Differences of element distribution between free and wheel side surface of NdFeB/α-Fe ribbons

The ribbons of NdFeB/α-Fe composite alloy were prepared by melt spinning and post crystallizing technique. The element distributions and phase component of both surfaces of as-spun ribbons were measured by energy dispersive spectrometry (EDS) and X-ray diffraction (XRD). Because of the centrifugatio...

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Bibliographic Details
Published inJournal of rare earths Vol. 29; no. 1; pp. 94 - 96
Main Authors ZHA, Wusheng, LIU, Jinyun, SONG, Tianxiu, WANG, Zhengyun
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2011
College of Material Science & Engineering, Xihua University, Chengdu 610039, China
Subjects
B-rich phase
concentration segregation
melt spin
NdFeB/α-Fe alloy
rare earths
concentration segregation
B-rich phase
melt spin
NdFeB/α-Fe alloy
rare earths
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Summary:The ribbons of NdFeB/α-Fe composite alloy were prepared by melt spinning and post crystallizing technique. The element distributions and phase component of both surfaces of as-spun ribbons were measured by energy dispersive spectrometry (EDS) and X-ray diffraction (XRD). Because of the centrifugation, a segregation of B, Fe, and Nd concentrations was observed at the cross section. After crystallizing annealing, the element concentration segregation still existed in the as-crystallized ribbons. Due to the segregation of B, Fe, and Nd, the B-rich phase was observed near the wheel side surface. The B-rich phase may deteriorate the magnetic property of NdFeB/α-Fe composite alloy.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(10)60408-5