低频脉冲磁场致非晶合金Fe_(78)Si_9B_(13)纳米晶化及机制  

Nano-crystallization and Its Mechanism of Amorphous Alloy Fe_(78)Si_9B_(13) Treated in Lower Frequency Pulse Magnetic Field

作　　者：郭红[1] 晁月盛[1] 

机构地区：[1]东北大学理学院

出　　处：《机械工程材料》2004年第3期40-43,共4页Materials For Mechanical Engineering

基　　金：高等教育博士专项基金资助项目(20020145009)

摘　　要：用TEM和穆斯堡尔技术研究了非晶Fe78Si9B13合金磁致晶化结构及晶化与脉冲磁场参数的关系,并粗略研究了非晶合金纳米晶化机制。结果表明:脉冲磁场作用产生的磁致伸缩能降低了非晶合金的形核势垒,使非晶合金得以纳米晶化。因为量子尺寸效应,试样电阻显现复杂性。The magneto-crystallized structure of amorphous (Fe_(78)Si_9B_(13)) alloy and the relationship of crystallization with pulse magnetic field parameters were investigated with TEM and Mssbauer spectrum technology. The nanocrystallization mechanism of amorphous alloy was also studied roughly. The results show that the magnetostriction energy resulting from the pulse magnetic field action reduces the nucleating potential barrier of amorphous crystallization, so that improves the nanocrystallization of amorphous alloy. The resistance of specimen appears to a complex variation.

关 键 词：非晶合金 纳米晶化 脉冲磁场 比电阻 

分 类 号：TB383[一般工业技术—材料科学与工程]