Alloy material for a rare earth from the r-t-b system, method for producing a seltenerdpermanentmagnets from the r-t-b system

摘要

Alloy material for a rare earth on r-t-b-based, comprising: an alloy based on r-t-b-based, the r, t and b comprises: (wherein r is at least one member, which is selected from the group consisting of nd, pr, dy and tb, dy or tb essentially in a concentration of 4 wt.% to 10 wt.% in the alloy of the r-t-b-type; t is a transition metal is contained mainly fe; and b boron, wherein a portion thereof by carbon or nitrogen may be replaced; and a connection with a high melting point of 1080 ° c or higher, wherein the compound having a high melting point in a concentration of from 0.002% by weight to 2 wt.% of.