| 简介 |
Provided are : an alloy material for an R-T-B system rare earth permanent magnet, which is capable of achieving high orientation rate and high coercivity (Hcj); and a method for producing an R-T-B system rare earth permanent magnet using the alloy material. The alloy material for an R-T-B system rare earth permanent magnet contains a plurality of R-T-B system alloys having different compositions and a metal powder, and each R-T-B system alloy consists of R that is composed of two or more elements selected from among rare earth elements, T that is composed of a transition metal essentially containing Fe, and B and unavoidable impurities. A first alloy, which has the highest Dy content among the plurality of R-T-B system alloys, contains not less than 17% by mass of Dy; and a second alloy, which has the smallest Dy concentration difference with respect to the first alloy among the plurality of R-T-B system alloys, has a Dy concentration difference of not less than 5% by mass with respect to the first alloy. |
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