Title :
Soft Magnetic Properties and Structures of Nanocrystalline Fe-Al-Si-Nb-B Alloy Ribbons
Author :
Watanabe, H. ; Saito, H. ; Takahashi, M.
Author_Institution :
Mitsui Petrochemical Industries, Ltd.
Abstract :
The soft magnetic properties and structures of nanocrystalline Fe-Al-Si-Nb-B alloy ribbons crystallized from an amorphous state were investigated. The best soft magnetic properties (effective permeability at 100 kHz of 23,000, core loss at 100 kHz, Bm=0.1 T of 9 W/kg, and saturation magnetostriction ¿s of +0.5×10¿6) were obtained for Fe66Al8Si14Nb3B9 alloy ribbons. These new alloy ribbons were composed of bcc Fe-based alloy with grain diameters less than 200 Å. It is suggested that the good soft magnetic properties are due to the nanocrystalline microstructure of the Fe-Si-Al alloy.
Keywords :
Aluminum alloys; Amorphous materials; Core loss; Crystallization; Iron; Magnetic properties; Magnetostriction; Nanostructures; Niobium alloys; Permeability;
Journal_Title :
Magnetics in Japan, IEEE Translation Journal on
DOI :
10.1109/TJMJ.1993.4565767
