铁基非晶的低频脉冲磁场处理效应  

Effect of pulsed magnetic field on the Fe-based amorphous alloys

作　　者：晁月盛[1] 李明扬[1] 耿岩[1] 刘吉刚[1] 

机构地区：[1]东北大学理学院,沈阳110004

出　　处：《物理学报》2004年第10期3453-3456,共4页Acta Physica Sinica

基　　金：国家高技术研究发展计划 (批准号 :2 0 0 2AA3 0 2 60 1);高等学校博士学科点专项科研基金 (批准号 :2 0 0 2 0 14 5 0 0 9)资助的课题~~

摘　　要：对非晶合金Fe78Si9B1 3进行了低频脉冲磁场处理 ,用穆斯堡尔谱学、透射电镜等方法观察处理试样的微观结构变化 .研究发现 ,当脉冲频率 2 0— 2 5Hz,磁场 16— 32kA m ,作用时间≤ 2min ,合金发生了纳米晶化 ,纳米相α Fe(Si)晶粒尺寸为 10nm .而且 ,在低频脉冲磁场处理过程中 ,非晶试样的温升≤ 2Amorphous Fe_(78)Si_9B_(13) alloys have been treated by pulsed magnetic field with lower frequency. The macrostructural change of amorphous specimens after treatment were observed by mssbauer spectroscopy and TEM etc.This investigation show that nanocrystallization of amorpous Fe_(78)Si_9B_(13) occurs under the conditions: pulsed field 16—32kA/m,pulse frequency 20—25 Hz,acting time ≤2min. The grain size of nanocrystalline phase α-Fe(Si) is about 10nm. And, the temperature rise of specimens during the course of the application of pulsed magnetic field is very low(ΔT≤20℃).

关 键 词：FE78SI9B13 非晶合金 磁场处理 纳米晶化 α-Fe 晶粒尺寸 试样 低频脉冲 观察 透射电镜 

分 类 号：O472.5[理学—半导体物理]