High magnetic performance NdFe10.5Mo1.5Nx prepared by mechanical alloying

Spherical or nearly regular hexagonal Nd powders with the size of 20-150 nm , Fe powders with the size of 20-150 nm and Mo powders with the size of 80- 100 nm were prepared by Argon and Hydrogen arc plasma. The nanostructural N dFe10.5Mo1.5 compound with ThMn12-type structure have been formed after hav ing been mechanically alloyed for 6-12 hours and crystallized at 700-850 de greesC under high purified Argon atmosphere. After having been nitrided at 400-500 degreesC for 2 hours, NdFe10.5Mo1.5Nx nanopowders with ThMn12-type structure can be obtained, which have excellent permanent magnetic properti es such as iH(c) within range of 360.4-716.2 kA/m (4528-8997 Oe), B-r withi n range of 0.6363-0.9831 T (6363-9831 Gs), (BH)(max) within range of 42.87- 166.2 kJ/m(3) (5.386-20.88 MGOe). (C) 2001 Kluwer Academic Publishers.