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The effects of nitrogen annealing on the microstructure and magnetic properties of melt-spun Nd-Fe-Co-Zr-B alloy have been studied. It is shown that the ribbons annealed in purified argon atmosphere are composed of Nd 2Fe14B and α-Fe phases, the microstructure of ribbons is homogeneous and fine-grained. The nitrogen-annealed ribbons are composed of Nd2Fe14B, NdBN2 and α-Fe phases, the microstructure of ribbons is relatively heterogeneous and coarse-grained. The increase of nitrogen content in the annealing atmosphere can increase the volume fractions of NdBN2 and α-Fe phases in the ribbons. The remanence, intrinsic coercivity and the maximum energy product of ribbons are decreased with increasing the nitrogen content in the annealing atmosphere. © (2012) Trans Tech Publications.
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ISSN： 1022-6680
Year： 2012
Volume： 476-478
Page： 1130-1133
Language： English
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ESI Highly Cited Papers on the List： 0 Unfold All
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