隆起度（γ）在Fe-Mn-Ti合金中随热处理条件而变化。在510℃回火，γ值随时间缓慢上升，但数值一直保持在0.4到0.5之间。在570℃回火，在50min，γ达极大值0.51，然后随时间延长略有下降。在各温度回火90min，观察性能的变化，看到（BH）max和（BrHc）在480℃达极大值，γ在较低温度，440℃达极大值。从历史角度看人们对隆起度数值的重视程度有明显变化。在国外1970年后的磁性材料书籍中基本不再提及隆起度，而在国内最近还有使用和论述的。其可能原因是对永磁体材料和永磁学的发展认识不同。
The Value of fullness factor(γ)changes with heat treat mentconditions in Fe-Mn-Ti alloy. When tempering at 510℃, γ rises slowly with time, but holding in the range 0.4 to 0.5. Tempering at 570℃, γ reaches its maximum, 0.51, at 50min, then decreases sligtly. For holding 90min at various temperaturs, the(BH)max and(BrH c)have a maximum at tempering temperature 480℃ respectively, and γ reaches the maximum at a lower temperature of 440℃. From historic point of view, attaching importance to fullness factor changed greatly. Fullness factor is less used in international publications for magnetic materials and permanent magnetism after 1970, but it is still mentioned and discussed in china. The reason may'be the different understanding on the development of permanent magnetic materials.
参考文献
| [1] | 《功能材料及其应用手册》编写组.功能材料及其应用手册[M].北京:机械工业出版社,1991:125,1273. |
| [2] | 马如璋,刘荣运,吕键.Fe-Mn-Ti合金的磁硬机理[J].金属功能材料,2000(06):20-26. |
| [3] | 戴礼智.金属磁性材料[M].上海:上海人民出版社,1973 |
| [4] | 钟文定.铁磁学[M].北京:科学出版社,1998 |
| [5] | 张世远;路CN权;薛荣华;都有为.磁性材料基础[M].北京:科学出版社,1988 |
| [6] | 周寿增;董清飞.超强永磁体-稀土铁系永磁材料[M].北京:冶金工业出版社,1999 |
| [7] | 周寿增;董清飞.稀土永磁材料及其应用[M].北京:冶金工业出版社,1990 |
| [8] | 冯索夫斯基CCNB;潘孝硕;李国栋;向仁生、CN施汝为.现代磁学[M].北京:科学出版社,1960 |
| [9] | 内山晋;姜恩永.应用磁学1983[M].天津:天津科学技术出版社,1980 |
| [10] | 樱井良文;姜恩永;程君实.现代工程磁学[M].北京:机械工业出版社,1981 |
| [11] | 何开元.精密合金材料学[M].北京:冶金工业出版社,1991 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%