Rev.Adv.Mater.Sci. (RAMS)
No 3, Vol. 18, 2008, pages 253-256

FORMATION OF Co-M-Ti-B (M=Fe, Nb) AMORPHOUS POWDERS
BY MECHANICAL SOLID-STATE REACTION

Hsin-Ming Wu, Chia-Jung Hu, Yan-Dong Cheng

Abstract

Amorphous Co70-XMXTi25B5 (M=Fe, Nb) powders with x=5, 10, 25, 35 were synthesized by mechanical alloying technique. Substitution of Co with small amount of Fe or Nb element reduces the thermal stability of the amorphous powders. The milled amorphous Co55Nb15Ti25B5 powder has comparable supercooled liquid region as its ternary Co70Ti25B5 counterpart. The milled Co70-XFeXTi25B5 alloys have lower coercive force and higher saturation magnetization than the milled Co70-XNbXTi25B5 alloys and show better soft magnetic properties.

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