Fe-Co based Nanocrystalline alloy
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Nanocrystalline FINEMET-type alloys (FeSiBCuNb ) having average grain diameter ~ 10 nm , obtained by the devitrification of rapidly solidified (typically 20 mm thick ribbons) amorphous alloys are attractive for applications due to their excellent soft magnetic properties e. g. - high saturation magnetic induction comparable with Fe-based amorphous alloys and large permeability as observed in Co-based metallic glasses. In Finemet type alloys the presence of small amount of Cu enhances the nucleation rate, while presence of Nb inhibits the grain growth, resulting in nano-crystallization which pr...
Nanocrystalline FINEMET-type alloys (FeSiBCuNb ) having average grain diameter ~ 10 nm , obtained by the devitrification of rapidly solidified (typically 20 mm thick ribbons) amorphous alloys are attractive for applications due to their excellent soft magnetic properties e. g. - high saturation magnetic induction comparable with Fe-based amorphous alloys and large permeability as observed in Co-based metallic glasses. In Finemet type alloys the presence of small amount of Cu enhances the nucleation rate, while presence of Nb inhibits the grain growth, resulting in nano-crystallization which proved to be key factor for obtaining the particular ultra fine grain structure.
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