Bulk SmCo/sub 5/α-Fe composite by plasma pressure consolidation

Abstract

Plasma pressure consolidation (PPC) was used to synthesize exchange coupled composite magnets. The magnets were processed from a mixture of micrometer-size, anisotropic magnetically hard SmCo/sub 5/ and nanometer size magnetically soft Fe particles. High density magnets were obtained by PPC at a temperature as low as 760/spl deg/C. The compacted SmCo/sub 5///spl alpha/-Fe composite showed single-phase magnetic behavior.