作　　者： ; ; ;

机构地区： 桂林电子科技大学材料科学与工程学院

出　　处： 《电工材料》 2012年第4期13-15,共3页

摘　　要： 采用电弧熔炼浇铸法和退火处理制备了系列合金A和B:A为(Tb1-xHox)0.2Pr0.8(Fe0.4Co0.6)1.88C0.05(x=0,0.2,0.4,0.6,0.8,1)合金,B为(Tb0.2DyxHo0.8-x)0.2Pr0.8(Fe0.4Co0.6)1.88C0.05(x=0,0.1,0.2,0.3,0.4,0.5)合金。X射线衍射(XRD)分析表明,合金均具有单一的立方Laves相结构。对于合金A,当x=0.8时,磁晶各向异性较小,易磁化方向为<111>方向,合金的磁致伸缩系数达到极大值(504×10-6);对于合金B,当x=0.3时,合金的磁致伸缩系数达到极大值(565.7×10-6)。 Series of alloys A：（Tb1-xHox）0.2Pr0.8（Fe0.4Co0.6）1.88Co0.05（x=0,0.2,0.4,0.6,0.8,1） and B：（Tb0.2Dyx-Ho0.8-x）0.2Pr0.8（Fe0.4Co0.6）1.88C0.05（X=0,0.1,0.2,0.3,0.4,0.5） were prepared by arc-melting top casting method and subsequent annealing. The XRD analysis shows that a single cubic Laves phase forms both in the alloys A and B. For the alloys A, magnetic measurements indicate that the magnetostriction, 2a, increases with the increase of the Ho content, and gets to the maximum value when x=0.8 and then the 2a decreases. The anisotropy of the compound is the minimum and the direction of easy magnetization is 〈111〉 when x=0.8. Similarly, for alloy B, the 2a gets to the maximum when x= 0.3.

关 键 词： 电弧熔炼 磁致伸缩 合金

领　　域： [电气工程] [一般工业技术] [电气工程] [一般工业技术]