ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The effects of a partial substitution of Cu or Nb for Fe on the structure and magnetic properties of mechanically alloyed Nd8Fe84Ti8 alloys were studied. Compared with Nd8Fe84Ti8 alloys prepared under the same conditions, the temperature necessary for the formation of the Nd(Fe, Ti)12 phase decreases from 900 to 750 °C with the addition of 3 at. % Cu. The addition of Cu hinders the nitrogenation of the Nd(Fe, Ti)12 phase. The pretreatment of hydrogenation on the Cu-added alloys at 300 °C facilitates the formation of nitrides. With increasing annealing temperature, the intrinsic coercivity of the nitrides increases until it attains a maximum at 850 °C. The addition of Nb is harmful to the formation of the perfect Nd(Fe, Ti)12 phase. For the 3 at. % Nb-containing alloys, annealing at 960 °C makes a metastable phase Nd(Fe, Ti)7 be formed. The addition of Nb is unfavorable for the intrinsic coercivity and the maximum magnetic energy product of the nitrides. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.373323
