Abstract
The structure and magnetic properties of Nd x Fe 92− x B 8 and Nd 10Fe 76B 8− y Ti 6+ y alloys prepared by mechanical alloying (MA) and subsequent annealing have been studied. It has been found that the exchange interaction between a soft α-Fe and a hard magnetic Nd 2Fe 14B phase results in a significant enhancement of the remanence for x<12. The best values of 4π M r=8.1 kGs, i H c=21.1 kOe and ( BH) max=14.1 MGOe are obtained for the series of Nd x Fe 92− x B 8 with x=16. For the series of Nd 10Fe 76B 8− y Ti 6+ y , when 0⩽ y⩽6, the main phase Nd 2Fe 14B is formed and accompanied by Nd 2O 3, Fe 2Ti and Nd-rich phases. In the present experimental investigation, the occupation state of Ti in the MA samples for 0⩽ y⩽6 has been considered. The intrinsic coercivity reaches up to more than 11 kOe for 4⩽ y⩽6. It is evident that the addition of Ti is favourable for the enhancement of the intrinsic coercivity in Nd–Fe–B alloys with a low level of Nd, which is mainly due to the coexistence of the Nd-rich phase and the hard magnetic phase with the structure of Nd 2Fe 14B containing Ti, combined with the suppression of α-Fe, for the samples with 0⩽ y⩽6.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
