真空熔炼(Tb、Dy)Fe金属间化合物的研究  

Study of Inter metallic Compound of (Tb、Dy)Fe by Vacuum Melting

作　　者：王立民[1] 李文[1] 孙长英[1] 杜富英[1] 赵敏寿[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《材料科学与工艺》1998年第3期45-47,共3页Materials Science and Technology

摘　　要：研究了采用真空电弧炉在配制熔炼（Ｔｂ、Ｄｙ）Ｆｅ金属间化合物过程中各种元素成分的变化。结果表明，在真空度约为１．３３Ｐａ下，经一定温度、时间熔炼后，（Ｔｂ、Ｄｙ）Ｆｅ中元素的成分由开始配制的组成—ＴｂＦｅ１．７５和ＤｙＦｅ１．７０，经１２ｍｉｎ熔炼后约为ＴｂＦｅ１．７５８和ＤｙＦｅ１．７３０；经２４ｍｉｎ熔炼后约为ＴｂＦｅ１．７６５和ＤｙＦｅ１．７５６。元素的挥发损失Ｄｙ＞Ｔｂ＞Ｆｅ。这和各元素的熔点、蒸气压等物理化学性质有关。Variation of composite element was studied by melting inter metallic compound of (Tb、Dy)Fe by vacuum are melting. The results indicated that the composite element ingredient was changed after melting at a cerfain temperature and for a period of time and in degree of vacuum of 1.33Pa. The compositions of TbFe 1.75 and DyFe 1.70 have been changed to TbFe 1.758 and DyFe 1.730 after melting for 12 minutes, and changed to TbFe 1.765 and DyFe 1.756 after melting for 24 minutes, respectively. The sequence of volatilization loss at wt% is Dy>Tb>Fe, this phenomena is related to physical and chemical properties of the element, for example, melting point and vapor pressure etc.

关 键 词：(Tb Dy)Fe 真空熔炼 挥发 磁致伸缩合金 

分 类 号：TG132.27[一般工业技术—材料科学与工程]