R-T-B SINTERED MAGNET
A R-T-B sintered magnet comprising a main phase of R2Fe14B and a grain boundary phase exhibits a high Br and elevated-temperature stability. The magnet is composed of 12.5-17.0 atom % of R which is typically Nd and Pr, 4.5-5.5 atom % of B, at least 70 atom % of T which is Fe and Co, 0.1-3.0 atom % o...
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| Format | Patent |
| Language | English |
| Published |
16.05.2024
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| Abstract | A R-T-B sintered magnet comprising a main phase of R2Fe14B and a grain boundary phase exhibits a high Br and elevated-temperature stability. The magnet is composed of 12.5-17.0 atom % of R which is typically Nd and Pr, 4.5-5.5 atom % of B, at least 70 atom % of T which is Fe and Co, 0.1-3.0 atom % of M1 which is typically Al, Cu or Ga, 0.01-0.5 atom % of M2 which is typically Sn, 0.05-1.0 atom % of M3 which is typically Zr, and up to 0.8 atom % of O, and the balance of C, N and incidental impurities. The grain boundary phase contains a R-T-(M1, M2) phase and a R-M2-C phase. |
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| AbstractList | A R-T-B sintered magnet comprising a main phase of R2Fe14B and a grain boundary phase exhibits a high Br and elevated-temperature stability. The magnet is composed of 12.5-17.0 atom % of R which is typically Nd and Pr, 4.5-5.5 atom % of B, at least 70 atom % of T which is Fe and Co, 0.1-3.0 atom % of M1 which is typically Al, Cu or Ga, 0.01-0.5 atom % of M2 which is typically Sn, 0.05-1.0 atom % of M3 which is typically Zr, and up to 0.8 atom % of O, and the balance of C, N and incidental impurities. The grain boundary phase contains a R-T-(M1, M2) phase and a R-M2-C phase. |
| Author | Yoshinari, Akihiro Hirota, Koichi Iida, Hiroki |
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| RelatedCompanies | Shin-Etsu Chemical Co., Ltd |
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| Snippet | A R-T-B sintered magnet comprising a main phase of R2Fe14B and a grain boundary phase exhibits a high Br and elevated-temperature stability. The magnet is... |
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| SubjectTerms | BASIC ELECTRIC ELEMENTS ELECTRICITY INDUCTANCES MAGNETS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS |
| Title | R-T-B SINTERED MAGNET |
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