Fe-based amorphous powders with high magnetic flux density were fabricated in an extremely high cooling rate of over 106K/s by spinning water atomization process (SWAP). The composition of the alloys studied were Fe79(Si0.5B0.5)19C2and Fex(Si0.3B0.7)98-xC2(x = 79,80,81,83,84). The saturation flux density Bs increased with increasing iron content. For Fe83(Si0.3B0.7)15C2, the Bs value was 1.64 T, which is 31% higher than that of our previously developed (Fe0.97Cr0.03)76(Si0.5B0.5)22C2alloy. Furthermore, consolidated cores of amorphous powders were also fabricated by compact-pressing techniques.
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Otsuka et al. (2008) studied this question.
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