|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials: An FMD Symposium in Honor of Michael E. McHenry
||CC-7: Infiltration Process in Permanent Magnets for Coercivity Enhancement
||Daniel Salazar, Andrés Martín-Cid, Rajasekhar Madugundo, José Manuel Barandiarán, George C. Hadjipanayis
|On-Site Speaker (Planned)
Actually commercial high energy permanent magnets use more than 10 % of expensive and critical raw material-Dy to obtain high values of coercivity and maximum energy product (BH)max. This work is focused on the development of high coercivity rare earth-lean/ Dy-free Nd-Fe-B permanent magnets using grain boundary infiltration and the study of the influence on infiltration and crystallization by the addition of Nb and Cu, as well as the compositional analysis of its microstructure and its magnetic characterization. The study was initially performed on amorphous ribbons of the understoichiometric Nd-lean (Nd10Fe84B6, Nd9Fe84B6Nb1 and Nd9Fe84B6Nb0.5Cu0.5) compositions and using the low melting point Pr3Co0.75Cu0.25 eutectic alloy as infiltration material. The results show a clear relationship between infiltration and the content of α-Fe phase which is previously formed during crystallization process. Additives help to control the grain size and coercivity field increases from 5 to 24.4 kOe after infiltration.
||Planned: None Selected