采用SEM、XRD、EDX等方法分析了添加合金元素B、Zr、Co前后Sm-Fe合金铸锭的微观结构及快淬条带中的相组成.研究表明,添加合金元素B、Zr、Co前后,Sm-Fe合金铸锭均由Sm_2Fe_(17)相、富Sm相和α-Fe相组成,添加B可促使铸锭晶粒细化,富Sm相由块状向条状变化,添加Zr、Co可使铸锭晶粒进一步细化,富Sm相进一步条状化.添加合金元素B、Zr、Co前,Sm-Fe合金仅在快淬速度达到30m/s时得到ThCu_7型六角晶结构的Sm_(10)Fe_(90)相及少量α-相;添加B、Zr、Co元素后,在不同快淬速度下合金均可得到单一的ThCu_7型六角晶结构的Sm_(10)Fe_(90)相及部分非晶相.添加Zr、Co元素后,快淬条带晶粒进一步细化.当Zr、Co元素含量一定时,随快淬速度的加快,其晶胞体积呈先升后降的趋势,同时快淬条带中的非晶相逐渐增加,Sm_(10)Fe_(90)相逐渐减少.
The effects of Zr, Co and B elements on the phase compositions and microstructure of ThCu_7-type Sm_(10)Fe_(90) alloys are studied by SEM, EDX and XRD. The result shows that with small fraction addition of Zr, Co and B elements, it remains the same consisting of Sm_2Fe_(17), Sm-rich and α-Fe phase of the Sm-Fe alloy cast With the addition of B element, the grain size of alloy cast becomes more finely and the shape of Sm-rich phase is changed to be stripe form blocklike. With the addition of Zr,Co and B elements, the grain of alloy cast becomes more fine than that of Sm-Fe-B alloy and the shape of Sm-rich phase is changed to be more thia Only the quenching velocity above 30m/s, the alloy consists of α-Fe phase and Sm_(10)Fe_(90) phase with the ThCu_7-type structure before the addition of Zr, Co and B elements. With the addition of Zr, Co and B elements, the alloy consists of Sm_(10)Fe_(90) phase and amorphous completely in any quenching velocity. With the addition of Zr and Co elements, the grain of ribbon is more fine than that of Sm-Fe-B ribbon. The cell volume lowers after presenting increase first of trend and the quantity of amorphous phase becomes more and more, the the quantity of Sm_(10)Fe_(90) phase becomes less and less with the increase of quenching velocity at Zr and Co content certain.
参考文献
| [1] | 叶金文,刘颖,李梦,高升吉,涂铭旌.Sm2Fe17合金的氢化-歧化过程演化[J].中国稀土学报,2005(03):303-306. |
| [2] | Katter M;Wecker J;Schultz L .Structural and hard magnetic properties of rapidly solidified SrmFe-N[J].Journal of Applied Physics,1991,70(06):3188. |
| [3] | Handstein A.;Wendhausen P.A.P. .Influence of hot isostatic pressing on the magnetic properties of melt-spun Sm/sub 2/Fe/sub 17/N/sub x/ magnets[J].IEEE Transactions on Magnetics,1993(6):2821-2823. |
| [4] | Yoneyama T;Yamamoto T;Hidaka T .Magnetic properties of rapidly quenched high rernanence Zr added Sm-Fe isotropic powders[J].Applied Physics Letters,1995,67(21):3197. |
| [5] | Kubis M.;Gutfleisch O.;Gebel B.;Muller KH.;Schultz L. Harris IR.;Brown DN. .Effect of small Zr additions on the microstructure of Sm2Fe17[J].IEEE Transactions on Magnetics,2000(5 Pt.1):3303-3305. |
| [6] | Sakurada S.;Hirai T.;Yanagida Y.;Sahashi M.;Abe S.;Kaneko T.;Tsutai A. .STRUCTURAL AND MAGNETIC PROPERTIES OF RAPIDLY QUENCHED (R,ZR)(FE,CO)(10)N-X (R=ND,SM)[J].Journal of Applied Physics,1996(8 Pt.2a):4611-4613. |
| [7] | Kawashima F.;Sakurada S. .Magnetic properties and microstructure of rapidly quenched SmZrFeCoN magnets[J].IEEE Transactions on Magnetics,1999(5):3289-3291. |
| [8] | 崔春翔,李杰民,孙继兵,韩瑞平.Sm2Fe17和Sm10.5Fe88.5Zr1.0的氮化行为[J].功能材料,2004(01):31-33. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%