Zr元素对Sm_2Fe_(17)合金结构的影响  

Effect of Zr Element on the Structure of Sm_2Fe_(17) Alloys

作　　者：叶金文[1] 刘颖[1] 朱国丽[1] 高升吉[1] 涂铭旌[1] 

机构地区：[1]四川大学,四川成都610065

出　　处：《稀有金属材料与工程》2006年第5期746-748,共3页Rare Metal Materials and Engineering

基　　金：四川省科技攻关项目资助(05GG009-020-01)

摘　　要：通过XRD,SEM,EDX等手段研究了Zr对Sm2Fe17母合金及均匀化热处理后合金的相及微观结构的影响。结果表明:少量Zr元素的加入,能有效抑制铸锭中α-Fe相的生成;改变富Sm相的分布形态,使其在合金中沿基体Sm2Fe17相晶界呈网状分布,同时能部分取代基体Sm2Fe17相中Fe;短时的热处理能进一步降低合金中α-Fe含量在消除富Sm相,并使Zr在合金中的分布趋于均匀,而长时间热处理对加Zr合金不是一个必要的环节。因此,Zr元素的加入有效的降低了成本,有利于制备成分均一的高质量的Sm2Fe17相母合金。The effects of Zr element on the phase compositions and microstructure of Sm2Fe17 alloys were studied by XRD, SEM and EDX in the article. Result shows that with small fraction （ ≤ 1%） addition of Zr element, the formation of α-Fe is restrained, the distribution of Sm-rich phase is changed to be reticulate along the crystal border, and the position of Fe in Sm2Fe17 is substituted partly. By heated for a short time, it can effectively depress the α-Fe phase and Sin-rich phase. But it is not necessary for Sm2（FeZr）17 alloy to be heated for a long time for homogeneity. So. adding small traction or Zr element can reduce the cost and make alloys with high quality.

关 键 词：稀土 永磁 SMFEN 

分 类 号：TM273[一般工业技术—材料科学与工程]