High energy product of isotropic bulk Sm-Co/alpha-Fe(Co) nanocomposite magnet with multiple hard phases and nanoscale grains
文献类型：期刊论文
| 作者 | Li, Shuo; Ma, Longfei; Fan, Jinkui; Yang, Jianping; Zheng, Qiang; Bian, Baoru; Zhang, Jian; Du, Juan |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021 |
| 卷号 | 88页码:183-188 |
| 关键词 | EXCHANGE NANOSTRUCTURES |
| 英文摘要 | Nanocomposite magnets consisting of hard and soft magnetic phases have potential applications to be the next generation of permanent magnets with very high energy product and less expensive rare-earth elements. But it is still a big challenge to obtain bulk magnets with ideal microstructure and high perfor-mance. In this work, two - step warm processing at relative low temperatures had been adopted to obtain nearly theoretical density bulk nanocomposite magnets from amorphous/nanocrystalline powder pre-cursors. Novel nanostructures consisting of multiple Sm-Co hard phases (SmCo5 as main phase, SmCo3, SmCo7, Sm2Co17 as minor phases) and 25 wt% alpha-Fe(Co) soft phase, nanoscale grain size below 20 nm for both the hard phase and soft phase, and the diffusion of Fe and Co compositions had been obtained in bulk isotropic magnets. Besides the ideal nanostructures, a high coercivity of 5.9 kOe, M-r/M-s value of 0.78 and a high square degree of demagnetization curve S = 0.47 were obtained. All of these factors together brought a new record-high energy product (BH)(max) of 23.6 MGOe. These results make an important step toward fabricating novel nanostructure with high performance. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21375]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | Du, J (corresponding author), Shanghai Univ, Sch Mat Sci & Engn, Inst Mat, Shanghai 200444, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, Shuo,Ma, Longfei,Fan, Jinkui,et al. High energy product of isotropic bulk Sm-Co/alpha-Fe(Co) nanocomposite magnet with multiple hard phases and nanoscale grains[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,88:183-188. |
| APA | Li, Shuo.,Ma, Longfei.,Fan, Jinkui.,Yang, Jianping.,Zheng, Qiang.,...&Du, Juan.(2021).High energy product of isotropic bulk Sm-Co/alpha-Fe(Co) nanocomposite magnet with multiple hard phases and nanoscale grains.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,88,183-188. |
| MLA | Li, Shuo,et al."High energy product of isotropic bulk Sm-Co/alpha-Fe(Co) nanocomposite magnet with multiple hard phases and nanoscale grains".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 88(2021):183-188. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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