Magnetic materials and magnets, as well as rapidly solidified alloys, magnetic materials, and magnets, and methods for manufacturing them.

Abstract

The purpose of the present disclosure is to provide an Sm-Fe-N magnetic material having good magnetic characteristics.　An Sm-Fe-N magnetic material according to the present disclosure comprises: M1 which is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo and W; M2 which is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo and W and is different from the M1; and C.

Claims

1. Sm-Fe-N magnetic material, M1 is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo, and W, M2 is an element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo, and W, and is a different element from M1. C and, A Sm-Fe-N magnetic material containing the M1-M2-C phase.

2. The Sm-Fe-N magnetic material according to claim 1, wherein M1 is one element selected from Zr, Ti, Hf, V, Nb, and Ta, and M2 is one element selected from Zr, Ti, Hf, V, Nb, and Ta, and is different from M1.

3. The Sm-Fe-N magnetic material according to claim 1, wherein the ratio of the content of M1 to the content of M2 is 2:8 to 8:2 on an atomic percentage basis.

4. The Sm-Fe-N magnetic material according to claim 1, wherein the major axis of the M1-M2-C phase is 30 nm or less.

5. The Sm content is 7.0 atomic% or more and 11.0 atomic% or less. The Fe content is between 69.5 atomic percent and 82.0 atomic percent. The Co content is between 0 atomic percent and 5 atomic percent. The N content is 11.0 atomic% or more and 19.5 atomic% or less. The total content of M1 and M2 is 1.6 atomic% or more and 5.0 atomic% or less. The Sm-Fe-N magnetic material according to claim 1, wherein the carbon content is greater than 0 atomic percent and less than or equal to 2.5 atomic percent.

6. An Sm-Fe-N magnetic material according to any one of claims 1 to 5, in the form of magnetic powder or a magnet.

7. An Sm-Fe-N magnet comprising an Sm-Fe-N magnetic material according to any one of claims 1 to 5 and a binder.

8. A method for producing an Sm-Fe alloy, comprising: Sm; Fe; M1, which is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo, and W; M2, which is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo, and W, different from the element M1; and a raw material containing C, melting the raw material, rapidly cooling and solidifying it to obtain an Sm-Fe alloy.

9. To obtain an Sm-Fe crystalline material by crystallizing an Sm-Fe alloy produced by the manufacturing method described in claim 8, and A method for producing an Sm-Fe-N magnetic material, comprising nitriding the aforementioned Sm-Fe crystalline material to obtain an Sm-Fe-N magnetic material.

10. Sm; Fe; M1 is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo, and W; M2 is one element selected from Zr, Ti, Hf, V, Nb, Ta, Cr, Mo, and W, different from M1; and a raw material containing C is melted and rapidly cooled to obtain an Sm-Fe-based rapidly solidified alloy. The aforementioned Sm-Fe-based rapidly solidified alloy is subjected to crystallization treatment to obtain an Sm-Fe-based crystalline material. The aforementioned Sm-Fe crystalline material is subjected to nitriding treatment to obtain Sm-Fe-N magnetic powder. The Sm-Fe-N magnetic powder and the binder raw materials are mixed to obtain a mixture, and A method for producing an Sm-Fe-N magnet, comprising molding the aforementioned mixture to obtain an Sm-Fe-N magnet.

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