Nanocomposite material alloy for magnet, manufacturing method of the powder and a method of manufacturing, as well as nanocomposite magnet powder and magnet

摘要

PROBLEM TO BE SOLVED: To efficiently produce magnet powder having a fine and homogeneous metallic structure with high reproducibility by allowing it to contain a metastable phase in which the Bragg reflection peak in X-ray diffraction lies at the position equivalent to specified crystal face spacing and controlling the intensity of the Bragg reflection peak and the intensity of the (110) Bragg scattering peak of body-centered cubic type Fe to specified ranges. SOLUTION: This alloy has a prescribed compsn. of Fe, rare earth elements, B and Co or one or more kinds selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Ni, Cu or the like. Then, it contains a metastable phase in which the Bragg reflection peak in X-ray diffraction lies at the position equivalent to the crystal face spacing of 0.179±0.005 nm. Moreover, the intensity of the Bragg reflection peak is 5 to 200% to the maximum intensity of the harrow pattern, and also, the intensity of the (110) Bragg scattering peak in body- centered cubic type Fe is 5% to the maximum intensity of the harrow pattern.