Title :
Fe-based amorphous soft-magnetic powder produced by spinning water atomization process (SWAP)
Author :
Endo, Isao ; Otsuka, Isamu ; Okuno, Ryosei ; Shintani, Atsunobu ; Yoshino, Masanori ; Yagi, Masaaki
Author_Institution :
Technol. Dev. Lab., Kubota Co., Amagasaki, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
Fe-based amorphous powder was produced by a new atomization process “Spinning Water Atomization Process (SWAP)”, having both high quenching rate and mass production potential. The composition of the alloys was Fe73Si10B15C2 and (Fe0.97Cr0.03)76(Si0.5 B0.5)22C2. The powders were in the amorphous state at particle size up to 300 μm and exhibited good magnetic softness. The coercive force of powders was about 0.2-0.4 Oe. In addition, in spite of the water quenching, the oxygen content was at a fairly low level of about 100-200 ppm. The shapes of powders were spherical for finer particles and rather flat with round edges for larger ones, suitable for forming consolidated powder cores with high density. Furthermore, consolidated amorphous powder cores were also fabricated by hot-pressing techniques
Keywords :
amorphous magnetic materials; boron alloys; chromium alloys; ferromagnetic materials; iron alloys; magnetic particles; particle size; silicon alloys; soft magnetic materials; (Fe0.97Cr0.03)76(Si0.5 B0.5)22C2; 300 mum; Fe-based amorphous soft-magnetic powder; Fe73Si10B15C2; coercive force; consolidated powder cores; flat with round edges; good magnetic softness; high density; high quenching rate; hot-pressing techniques; mass production potential; particle size; spherical; spinning water atomization process; Amorphous magnetic materials; Amorphous materials; Atomic measurements; Chromium alloys; Coercive force; Iron alloys; Mass production; Powders; Silicon alloys; Spinning;
Journal_Title :
Magnetics, IEEE Transactions on
