Effect of Sm-rich liquid phase on magnetic properties and microstructures of sintered 2：17-type Sm-Co magnet
The effect of Sm-rich liquid phase （Sm2Co3） on magnetic properties and microstructure of 2：17-type Sin-Co magnet was studied. Three phases existed in liquid phase ingot, and took on white, dark grey and grey, respectively. It was found that the composition of the grey area was similar to the nominal...
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| Published in | Journal of rare earths Vol. 29; no. 10; pp. 934 - 938 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.10.2011
Division of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, China |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-0721 2509-4963 |
| DOI | 10.1016/S1002-0721(10)60572-8 |
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| Abstract | The effect of Sm-rich liquid phase （Sm2Co3） on magnetic properties and microstructure of 2：17-type Sin-Co magnet was studied. Three phases existed in liquid phase ingot, and took on white, dark grey and grey, respectively. It was found that the composition of the grey area was similar to the nominal one. Our results indicated that the optimal composition was obtained at 3 wt.% liquid phase added, and the magnetic properties were B~I 1.58 kGs, Hci〉26 kOe, （BH）m=29.51 MGOe. Br increased by 3%, Hci was 13 times larger, and （B/-/）m was 6 times bigger than none liquid phase magnets. Moreover, with the aging time decreasing from 20 to 8 h, the squareness of the demagnetization curves got better, while the coercivity of the samples decreased. It revealed that Sm（Co,Cu）5 phase also precipitated at particle boundaries. It maybe also enhanced the coercivity. |
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| AbstractList | The effect of Sm-rich liquid phase (Sm sub(2Co) sub(3)) on magnetic properties and microstructure of 2:17-type Sm-Co magnet was studied. Three phases existed in liquid phase ingot, and took on white, dark grey and grey, respectively. It was found that the composition of the grey area was similar to the nominal one. Our results indicated that the optimal composition was obtained at 3 wt.% liquid phase added, and the magnetic properties were B sub(r=11.58 kGs, H) sub(c)i >26 kOe, (BH) sub(m=29.51 MGOe. B) sub(r) increased by 3%, H sub(ci was 13 times larger, and (BH)) sub(m) was 6 times bigger than none liquid phase magnets. Moreover, with the aging time decreasing from 20 to 8 h, the squareness of the demagnetization curves got better, while the coercivity of the samples decreased. It revealed that Sm(Co, Cu) sub(5 phase also precipitated at particle boundaries. It maybe also enhanced the coercivity.) The effect of Sm-rich liquid phase (Sm 2Co 3) on magnetic properties and microstructure of 2:17-type Sm-Co magnet was studied. Three phases existed in liquid phase ingot, and took on white, dark grey and grey, respectively. It was found that the composition of the grey area was similar to the nominal one. Our results indicated that the optimal composition was obtained at 3 wt.% liquid phase added, and the magnetic properties were B r=11.58 kGs, H ci >26 kOe, ( BH) m=29.51 MGOe. B r increased by 3%, H ci was 13 times larger, and ( BH) m was 6 times bigger than none liquid phase magnets. Moreover, with the aging time decreasing from 20 to 8 h, the squareness of the demagnetization curves got better, while the coercivity of the samples decreased. It revealed that Sm(Co, Cu) 5 phase also precipitated at particle boundaries. It maybe also enhanced the coercivity. TB34; The effect of Sm-rich liquid phase (Sm2Co3) on magnetic properties and microstructure of 2:17-type Sm-Co magnet was studied.Three phases existed in liquid phase ingot,and took on white,dark grey and grey,respectively.It was found that the composition of the grey area was similar to the nominal one.Our results indicated that the optimal composition was obtained at 3 wt.％ liquid phase added,and the magnetic properties were Br=11.58 kGs,Hci＞26 kOe,(BH)m=29.51 MGOe.Br increased by 3％,Hci was 13 times larger,and (BH)m was 6 times bigger than none liquid phase magnets.Moreover,with the aging time decreasing from 20 to 8 h,the squareness of the demagnetization curves got better,while the coercivity of the samples decreased.It revealed that Sm(Co,Cu)5 phase also precipitated at particle boundaries.It maybe also enhanced the coercivity. The effect of Sm-rich liquid phase （Sm2Co3） on magnetic properties and microstructure of 2：17-type Sin-Co magnet was studied. Three phases existed in liquid phase ingot, and took on white, dark grey and grey, respectively. It was found that the composition of the grey area was similar to the nominal one. Our results indicated that the optimal composition was obtained at 3 wt.% liquid phase added, and the magnetic properties were B~I 1.58 kGs, Hci〉26 kOe, （BH）m=29.51 MGOe. Br increased by 3%, Hci was 13 times larger, and （B/-/）m was 6 times bigger than none liquid phase magnets. Moreover, with the aging time decreasing from 20 to 8 h, the squareness of the demagnetization curves got better, while the coercivity of the samples decreased. It revealed that Sm（Co,Cu）5 phase also precipitated at particle boundaries. It maybe also enhanced the coercivity. |
| Author | 张文臣 赵睿 方以坤 周鸣鸽 朱明刚 李卫 |
| AuthorAffiliation | Division of Functional Materials, Central Iron and Steel Research Institute, Beifing 100081, China |
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| CitedBy_id | crossref_primary_10_1007_s12598_013_0188_9 crossref_primary_10_1016_j_jre_2018_04_014 crossref_primary_10_1016_j_jre_2020_06_009 crossref_primary_10_1149_1945_7111_ac90f1 crossref_primary_10_1016_j_jmmm_2014_09_016 crossref_primary_10_1016_S1002_0721_12_60113_6 crossref_primary_10_1016_S1002_0721_12_60133_1 crossref_primary_10_1016_j_jmmm_2023_170468 crossref_primary_10_1002_pssa_202400629 crossref_primary_10_1016_j_jre_2019_07_006 crossref_primary_10_1016_j_physb_2015_03_009 |
| Cites_doi | 10.1063/1.369597 10.1063/1.2946978 10.1063/1.323729 10.1088/0022-3727/44/6/064001 10.1063/1.1653354 10.1063/1.1809250 10.1088/0022-3727/33/17/201 10.1088/0953-8984/15/32/321 10.1016/S0304-8853(00)00508-4 10.1016/j.actamat.2003.10.015 10.1016/j.jmmm.2006.01.107 10.1109/20.908776 10.1016/S0304-8853(99)00294-2 10.1016/0022-5088(86)90253-5 10.1016/j.scriptamat.2010.03.066 10.1109/TMAG.1977.1059703 |
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| Keywords | scanning electron microscopy 2:17-type sintered magnets magnetic properties Sm-rich liquid phase rare earths 2∶17-type sintered magnets |
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| Notes | 11-2788/TF The effect of Sm-rich liquid phase （Sm2Co3） on magnetic properties and microstructure of 2：17-type Sin-Co magnet was studied. Three phases existed in liquid phase ingot, and took on white, dark grey and grey, respectively. It was found that the composition of the grey area was similar to the nominal one. Our results indicated that the optimal composition was obtained at 3 wt.% liquid phase added, and the magnetic properties were B~I 1.58 kGs, Hci〉26 kOe, （BH）m=29.51 MGOe. Br increased by 3%, Hci was 13 times larger, and （B/-/）m was 6 times bigger than none liquid phase magnets. Moreover, with the aging time decreasing from 20 to 8 h, the squareness of the demagnetization curves got better, while the coercivity of the samples decreased. It revealed that Sm（Co,Cu）5 phase also precipitated at particle boundaries. It maybe also enhanced the coercivity. ZHANG Wenchen , ZHAO Rui, FANG Yikun, ZHOU Mingge , ZHU Minggang LI Wei （（Division of Functional Materials, Central Iron and Steel Research Institute, Beifing 100081, China） 2：17-type sintered magnets; Sm-rich liquid phase; magnetic properties; scanning electron microscopy; rare earths ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
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| Snippet | The effect of Sm-rich liquid phase （Sm2Co3） on magnetic properties and microstructure of 2：17-type Sin-Co magnet was studied. Three phases existed in liquid... The effect of Sm-rich liquid phase (Sm 2Co 3) on magnetic properties and microstructure of 2:17-type Sm-Co magnet was studied. Three phases existed in liquid... The effect of Sm-rich liquid phase (Sm sub(2Co) sub(3)) on magnetic properties and microstructure of 2:17-type Sm-Co magnet was studied. Three phases existed... TB34; The effect of Sm-rich liquid phase (Sm2Co3) on magnetic properties and microstructure of 2:17-type Sm-Co magnet was studied.Three phases existed in... |
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| SubjectTerms | 2:17-type sintered magnets Boundaries Coercive force Coercivity Liquid phases Magnetic properties Microstructure Optimization Rare earth metals rare earths scanning electron microscopy Sm-rich liquid phase 微观结构 液相烧结 磁体 磁学性质 磁性能 钴 高矫顽力 |
| Title | Effect of Sm-rich liquid phase on magnetic properties and microstructures of sintered 2：17-type Sm-Co magnet |
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