论文部分内容阅读
研究了Ｔｂ０．２７Ｄｙ０．７３Ｆｅｘ（ｘ＝１．８，１．９，２，２．１）三元系和Ｔｂ０．２７Ｄｙ０．７３Ｆｅ１．８Ｍ０．１（Ｍ＝Ｚｎ，Ｔｉ，Ａｌ，Ｃｒ）四元系超磁致伸缩材料的磁性。合金在氩气保护的真空电弧炉中熔炼，铸锭在１０００℃真空热处理７天，用法拉第磁秤测定居里温度，用ＬＤＪ９５００振动样品磁强计测磁化曲线，用电阻应变计测量磁致伸缩。Ｔｂ０．２７Ｄｙ０．７３Ｆｅｘ合金的居里温度在３５５～３７５℃范围内，加入Ｚｎ、Ｔｉ、Ａｌ和Ｃｒ降低合金的居里温度，加Ｃｒ增加合金的磁致伸缩，加Ａｌ增加合金在低磁场下的磁致伸缩，加Ｚｎ，Ｔｉ降低磁致伸缩。除加Ｃｒ外，热处理也能提高合金的磁致伸缩。
Tb0.27Dy0.73Fex (x = 1.8,1.9,2,2.1) ternary system and Tb0.27Dy0.73Fe1.8M0.1 (M = Zn, Ti, Al, Cr) quaternary Department of magnetostrictive magnetostrictive material. The alloy was melted in an argon-protected vacuum arc furnace, the ingot was vacuum heat treated at 1000 ° C for 7 days, the Curie temperature was measured with a Faraday magnetic scale, the magnetization curve was measured with a LDJ9500 vibrating sample magnetometer, the magnetostriction was measured with a resistance strain gauge . The Curie temperature of Tb0.27Dy0.73Fex alloy is in the range of 355 ~ 375 ℃. The addition of Zn, Ti, Al and Cr reduces the Curie temperature of the alloy. Adding Cr increases the magnetostriction of the alloy. Adding Al increases the alloy’s magnetic field under low magnetic field Magnetostrictive, plus Zn, Ti reduce magnetostriction. In addition to adding Cr, heat treatment can also improve the magnetostrictive alloy.