微稀土化非晶带材的晶化行为和磁阻抗效应  

Crystallization Behavior and Magneto Impedance Effect of Micro Rare Earth Amorphous Strip

作　　者：郭斌[1] 蒋达国[2] 敖辉[2] 

机构地区：[1]井冈山大学现代教育技术中心,江西吉安343009 [2]井冈山大学数理学院,江西吉安343009

出　　处：《热加工工艺》2015年第14期154-157,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(11064005);江西省教育厅科技资助项目(GJJ14553);江西省原子与分子物理重点学科资助项目(2011-2015)

摘　　要：将稀土La元素掺杂Fe73.5Cu1Nb3Si13.5B9合金,采用单辊法制备了FeCuNbSiB-La合金带材。用XRD分析了带材的晶化行为,用阻抗分析仪测试了带材的磁阻抗效应。结果表明,淬火态FeCuNbSiB-La合金带材为非晶态结构,经550℃晶化热处理后的FeCuNbSiB-La(0.5wt%)非晶带材形成了非晶和纳米晶双相共存结构;FeCuNbSiB-La非晶带材的磁阻抗效应随测试频率的升高和磁场强度的增大而增大,随稀土La元素含量的增大呈先增大后减小的趋势。Adding La to Fe73.5Cu1Nb3Si13.5B9 alloy, FeCuNbSiB-La alloy strips were successfully prepared by single-roller method. The crystallization behavior of the trips was analyzed by XRD. The magneto impedance effect was tested by impedance analyzer. The results show that FeCuNbSiB-La alloy’s strip is an amorphous phase at quenching state, and the strip crystallizes into a two-phase mixture of amorphous and nanocrystalline after 550℃ heat treatment when the La content is 0.5wt%. The magneto impedance increases with the frequency and the magnetic field increasing, and first increases and then decreases with the increase of rare-earth content.

关 键 词：FeCuNbSiB-La合金带材 晶化行为 磁阻抗效应 

分 类 号：TG139.8[一般工业技术—材料科学与工程]