ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
In an alloy design to precipitate the hard Nd2Fe14B (2-14-1) in the NdFe11M (1-12 phase, M is one of Ti/V/Mo/Al) matrix, different ratios of the 2-14-1 composition were added into the 1-12 compositions and prepared by melt spinning. It resulted in high-coercivity Nd-Fe-B-M alloys (M is Ti/V/Mo/Al) with Nd and B composition less than the stoichiometric 2-14-1 compound, yet with promising intrinsic coercivity (iHc) of up to 12 kOe after suitable annealing. XRD analyses showed that for the alloys with higher iron lower in both Nd and B, the matrix is 1-12 and alpha-iron, while for the alloys with higher Nd and B, the 2-14-1 is competitive with other phases. The iHc vs temperature fitting of a Nd10Fe83.1B2.7Ti4.2 alloy (iHc=80 kA/m at 293 K) shows weak pinning, while that of a Nd10.8Fe82.9B4.4Ti1.9 alloy (iHc=900 kA/m at 293 K) shows strong pinning.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.349948
