Patent ID: 9314843
Filing Date: 2016-04-19
CPC Classification: B22F,C22C,H01F,Y10T

Claim Text:
1. A powder compact produced by compacting the powder for a magnet, comprising: each of magnetic particles constituting the powder for the magnet being composed of less than 40% by volume of a hydrogen compound of a rare earth element, an iron-containing material, and the balance composed of unavoidable impurities, wherein: said hydrogen compound of the rare earth element consists of the rare earth element and hydrogen; the iron-containing material consists of iron and an iron-boron alloy consisting of iron and boron; a phase of the hydrogen compound of the rare earth element and a phase of the iron-containing material are present adjacent to each other; the distance between the phases of the rare earth element hydrogen compound adjacent to each other with the phase of the iron-containing material interposed therebetween is 3 μm or less; the relative density of the powder compact is 85% or more; and the phase of the hydrogen compound is granular, and the granular hydrogen compound of a rare earth element is dispersed in the phase of the iron-containing material.