Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys
The (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>100−<i>x</i></sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<i><sub>x</sub></i> hybrid magnetic alloys were prepared by the ball milling of the combined annealed Mn<sub&...
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MDPI AG
2022-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/9/1543 |
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| author | Shunda Lu Yang Yang Linfeng Chen Zhen Xiang Wei Lu |
| author_facet | Shunda Lu Yang Yang Linfeng Chen Zhen Xiang Wei Lu |
| author_sort | Shunda Lu |
| collection | DOAJ |
| description | The (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>100−<i>x</i></sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<i><sub>x</sub></i> hybrid magnetic alloys were prepared by the ball milling of the combined annealed Mn<sub>55</sub>Bi<sub>45</sub> powders and Nd<sub>2</sub>Fe<sub>14</sub>B powders. The magnetic properties at room temperature and elevated temperature were investigated. It was found that the saturation magnetization and the coercivity at room temperature increased significantly with the increasing Nd<sub>2</sub>Fe<sub>14</sub>B content. The enhanced energy product of 10.8 MGOe and 11.5 MGOe were obtained in (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>40</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>60</sub> and (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>20</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>80</sub>. At elevated temperatures (350 K), the coercivities of 16.6 kOe and 16.1 kOe were obtained with Nd<sub>2</sub>Fe<sub>14</sub>B content of 20 wt.% and 40 wt.%, which were higher than those at room temperature. The temperature coefficients of coercivity of (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>80</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>20</sub> and (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>60</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>40</sub> were calculated to be positive, owing to the coercivity temperature characteristics of MnBi alloy. Finally, the energy products remained 10.5 MGOe and 10.1 MGOe in (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>40</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>60</sub> and (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>20</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>80</sub> at 350 K, which exhibited potential for high temperature applications. |
| first_indexed | 2024-03-09T23:08:34Z |
| format | Article |
| id | doaj.art-21ea5e30013a48cc87bbcb2e55ae1f23 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T23:08:34Z |
| publishDate | 2022-09-01 |
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| spelling | doaj.art-21ea5e30013a48cc87bbcb2e55ae1f232023-11-23T17:47:50ZengMDPI AGMetals2075-47012022-09-01129154310.3390/met12091543Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic AlloysShunda Lu0Yang Yang1Linfeng Chen2Zhen Xiang3Wei Lu4Shanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, ChinaShanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, ChinaShanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, ChinaShanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, ChinaShanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, ChinaThe (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>100−<i>x</i></sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<i><sub>x</sub></i> hybrid magnetic alloys were prepared by the ball milling of the combined annealed Mn<sub>55</sub>Bi<sub>45</sub> powders and Nd<sub>2</sub>Fe<sub>14</sub>B powders. The magnetic properties at room temperature and elevated temperature were investigated. It was found that the saturation magnetization and the coercivity at room temperature increased significantly with the increasing Nd<sub>2</sub>Fe<sub>14</sub>B content. The enhanced energy product of 10.8 MGOe and 11.5 MGOe were obtained in (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>40</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>60</sub> and (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>20</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>80</sub>. At elevated temperatures (350 K), the coercivities of 16.6 kOe and 16.1 kOe were obtained with Nd<sub>2</sub>Fe<sub>14</sub>B content of 20 wt.% and 40 wt.%, which were higher than those at room temperature. The temperature coefficients of coercivity of (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>80</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>20</sub> and (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>60</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>40</sub> were calculated to be positive, owing to the coercivity temperature characteristics of MnBi alloy. Finally, the energy products remained 10.5 MGOe and 10.1 MGOe in (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>40</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>60</sub> and (Mn<sub>55</sub>Bi<sub>45</sub>)<sub>20</sub>/(Nd<sub>2</sub>Fe<sub>14</sub>B)<sub>80</sub> at 350 K, which exhibited potential for high temperature applications.https://www.mdpi.com/2075-4701/12/9/1543MnBi alloyNdFeB alloyhybrid magnetic alloysmagnetic properties |
| spellingShingle | Shunda Lu Yang Yang Linfeng Chen Zhen Xiang Wei Lu Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys Metals MnBi alloy NdFeB alloy hybrid magnetic alloys magnetic properties |
| title | Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys |
| title_full | Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys |
| title_fullStr | Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys |
| title_full_unstemmed | Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys |
| title_short | Magnetic Properties of the Mn<sub>55</sub>Bi<sub>45</sub>/Nd<sub>2</sub>Fe<sub>14</sub>B Hybrid Magnetic Alloys |
| title_sort | magnetic properties of the mn sub 55 sub bi sub 45 sub nd sub 2 sub fe sub 14 sub b hybrid magnetic alloys |
| topic | MnBi alloy NdFeB alloy hybrid magnetic alloys magnetic properties |
| url | https://www.mdpi.com/2075-4701/12/9/1543 |
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