Fe-Ni-(Nb, V, Ta) BASED FLAT METAL SOFT MAGNETIC POWDER AND MAGNETIC COMPOSITE MATERIAL COMPRISING THE SOFT MAGNETIC POWDER

摘要

PROBLEM TO BE SOLVED: To provide Fe-Ni-(Nb, V, Ta) based flat metal soft magnetic powder, and to provide Fe-Ni-(Nb, V, Ta) based oxide film-coated flat metal soft magnetic powder with an oxide film formed on the surface of the same powder.;SOLUTION: The flat metal soft magnetic powder has a composition containing 60 to 90% Ni, one or more kinds selected from Nb, V and Ta by 0.05 to 20% in total, and, if required, further comprising one or two kinds selected from Al and Mn by 0.01 to 1% in total, and the balance Fe, and has dimensions and shape satisfying the average particle diameter of 30 to 150 μm and an aspect ratio of 5 to 500, wherein when the peak height of the plane index (220) in the X-ray diffraction pattern measured in such a manner that the place including the incidence direction and diffraction direction of X-rays is made vertical to the flat plane of the flat metal soft magnetic powder, and also, the angle formed by the incidence direction and the flat plane and the angle formed by the diffraction direction and the flat plane are made equal, is denoted as I₂₂₀, and the peak height of the plane index (111) is denoted as I₁₁₁, the peak intensity ratio I₂₂₀/I₁₁₁ is within the range of 0.1 to 10.;COPYRIGHT: (C)2006,JPO&NCIPI