The influence of partial C substitution for B on structural and magnetic properties of Nd17Fe76(B(1-x)C(x))7 alloys has been studied. It has been discovered that the stable hard magnetic phase Nd2Fe14(B,C) with the tetragonal structure can be formed if x < 0.9. As the C content increases, the lattice constant a is nearly constant whereas c decreases linearly. Furthermore, with increasing C content , the microstructure of cast alloys and sintered magnets varies. The temperature dependence of the anisotropy field H(A) and the coercivity i(H)c of the Nd17Fe76(B(1-x)C(x)7 alloys was measured from room temperature up to about 300-degrees-C. The anisotropy field H(A) increases whereas the coercivity i(H)c decreases greatly with increasing C content.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%