Sm-Fe-N magnet material and Sm-Fe-N bonded magnet
The present invention relates to an Sm—Fe—N magnet material including: 7.0-12 at % of Sm; 0.1-1.5 at % of at least one element selected from the group consisting of Hf, Zr, and Sc; 0.1-0.5 at % of Mn; 10-20 at % of N; and 0-35 at % of Co, with the remainder being Fe and unavoidable impurities. The present invention also relates to an Sm—Fe—N bonded magnet including a powder of the Sm—Fe—N magnet material and a binder.
1. An Sm—Fe—N magnet material, comprising:
7.0-12 at % of Sm;
0.1-1.5 at % of at least one element selected from the group consisting of Hf, Zr, and Sc;
0.1-0.5 at % of Mn;
10-20 at % of N,
0-35 at % of Co; and
0.1-0.5 at % of Si,
with a remainder being Fe and unavoidable impurities.
2. The Sm—Fe—N magnet material according to claim 1 , further comprising 0.1-0.5 at % of Al.
3. The Sm—Fe —N magnet material according to claim 1 , wherein a main phase thereof has a TbCu 7 -type crystal structure.
4. The Sm—Fe—N magnet material according to claim 2 , wherein a main phase thereof has a TbCu 7 -type crystal structure.
5. An Sm—Fe—N magnet material, comprising:
7.0-12 at % of Sm;
0.1-1.5 at % of at least one element selected from the group consisting of Hf, Zr, and Sc;
0.1-0.5 at % of Mn;
10-20 at % of N,
0-35 at % of Co; and
0.1-0.5 at % of Al,
with a remainder being Fe and unavoidable impurities.
6. The Sm—Fe—N magnet material according to claim 5 , wherein a main phase thereof has a TbCu 7 -tape crystal structure.
7. An Sm—Fe—N bonded magnet comprising a powder of the Sm—Fe—N magnet material according to claim 1 and a binder.
8. An Sm—Fe—N bonded magnet comprising a powder of the Sm—Fe—N magnet material according to claim 2 and a binder.
9. An Sm—Fe—N bonded magnet comprising a powder of the Sm—Fe—N magnet material according to claim 3 and a binder.
10. An Sm—Fe—N bonded magnet comprising a powder of the Sm—Fe—N magnet material according to claim 4 and a binder.
11. An Sm—Fe—N bonded magnet comprising a powder of the Sm—Fe—N magnet material according to claim 5 and a binder.
12. An Sm—Fe—N bonded magnet comprising a powder of the Sm—Fe—N magnet material according to claim 6 and a binder.