利用X射线衍射仪、扫描电子显微镜、X射线电子能谱分析以及磁性测量的方法,研究了高矫顽力2:17型钐钴稀土永磁合金在等级时效过程中磁性能的变化与时效处理条件及显微组织结构的关系.试验结果表明:合金一经时效,就由单相固溶体分解为2:17相和1:5相,在随后降低温度的等级时效过程中,内禀矫顽力Hci的提高可以认为是由两相成分的变化进而导致畴壁能差的变化引起的,另外时效过程中产生的晶界析出物对矫顽力的提高也起了一定的作用.
参考文献
| [1] | 周寿增.稀土永磁材料及其应用[M].北京:冶金工业出版社,1995:291. |
| [2] | 周寿增;王润.Reversible Change of Coercivity and Microstructure of Sm(Co,Cu,Fe,Zr) 7.4 during Step Aging Treatment[J].钢铁研究学报,1982(z2):114-121. |
| [3] | Ojima T;Tomizawa S et al.New Type Rare-earth-cobalt Magnets with an Energy Product of 30 MGOe[J].Japanese Journal of Applied Physics,1977,116:671. |
| [4] | Searle C W et al.[J].Journal of Applied Physics,1982,53(03):2395. |
| [5] | 周寿增.稀土永磁材料及其应用[M].北京:冶金工业出版社,1995:55. |
| [6] | Livingston J D et al.Microstructure of Aged Sm(Co, Cu, Fe,Zr)7 Magnets[J].Journal of Applied Physics,1977,48(03):1350. |
| [7] | Nagel H.Influence of Cu-content on the Hard Magnetic Properties of Sm(Co, Cu) 2:17 Compounds[J].IEEE Transactions on Magnetics,1978(05):671. |
| [8] | Hadjipanayis G C;Hazelton R C.The Effect of Heat Treatment on the Microstructure and Magnetic Properties of Sm(Co,Cu,Fe,Zr)7.2 Magnets. In: KARL JSTRANAT ed. Fifth Rare Earth-Cobalt Magnets Workshop[A].Dayton,Ohio:KARL J STRANAT,1981:667. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%