表面处理和温度对铁基非晶带材压磁性能的影响  

Effect of surface processing and temperature on piezomagnetic properties of Fe-based amorphous strips

作　　者：万珍珍[1] 朱正吼[1] 黄渝鸿[2] 

机构地区：[1]南昌大学材料科学与工程学院,江西南昌330031 [2]中国工程物理研究院,四川绵阳621000

出　　处：《功能材料》2008年第6期942-945,共4页Journal of Functional Materials

基　　金：国家自然科学基金--NSAF联合基金资助项目(10576014)

摘　　要：采用4284A阻抗分析仪，在0～1MHz频率范围内，研究了表面状态和测试温度对非晶Fe73.5Cu1Nb3Si13．5B。带材压磁性能的影响情况。结果表明，非晶带材的阻抗变化随着测试频率的增加而增加，对0．1MPa以下的微应力变化非常敏感；当压应力〉0．1MPa时，经硅橡胶和EVA胶处理的带材与未表面处理的带材相比压磁敏感度升高，尤其是经硅橡胶处理的非晶带材，其压磁灵敏度最大；测试温度升高后，非晶带材压磁灵敏度增加，30～40℃时压磁性能最好，经硅橡胶处理的非晶带材在40℃、0．2～1.0MPa条件下，压磁曲线斜率达到0．0506；当压应力〉0.2MPa时，非晶带材具有很好的压磁稳定性。The effect of surface processing and temperature on piezomagnetic properties of Fe73. 5 Cu1Nb3 Si13.5 B9 amorphous strips were studied at the frequency range from 0Hz to 1MHz by 4284A impedance analyzer. The results show that the impedance of amorphous strips increase with frequency increasing, and the amorphous strips are very sensitive when stresses change from 0-0.2MPa. The piezomagnetic sensitivity of those strips covered with silicon rubber and covered with EVA film are higher than that of those strips of free Surface when stresses are more than 0. 1MPa. Especially those strips covered with silicon rubber have the best piezomagnetic properties. Sensitivity of piezomagnetic properties increase with temperature increasing, especially in the range of 30- 40℃. When temperature being 40℃ and stress being in the range of 0.2-1.0MPa, slope of ｜ △Z｜-Stress curve that surface of amorphous strip was covered with silicon rubber, is up to 0. 0506. When stresses being more than 0.2MPa, piezomagnetic properties of amorphous strips are very steady.

关 键 词：非晶带材 压磁性能 表面状态 

分 类 号：O441.2[理学—电磁学] TG132.2[理学—物理]