Fe_(78)Si_(9)B_(13)非晶合金纳米晶化的低频脉冲磁场处理方法  

Nano-Crystallization of Amorphous Alloy Fe_(78)Si_(9)B_(13)by Treatment of Low-Frequency Pulsating Magnetic Field

作　　者：张艳辉[1] 晁月盛[1] 

机构地区：[1]东北大学理学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2003年第10期1018-1020,共3页Journal of Northeastern University(Natural Science)

基　　金：高等学校博士学科点专项基金资助项目(20020145009).

摘　　要：低频脉冲磁场处理是一种崭新的非热处理型非晶纳米晶化的方法·针对非晶合金Fe78Si9B13进行了低频脉冲磁场处理,用M ssbauer谱仪、透射电子显微镜观察处理后样品的微观结构变化·研究表明,低频脉冲磁场可促进非晶合金Fe78Si9B13发生纳米晶化,在所用脉冲磁场参数下,晶粒尺寸为2～10nm,且试样温升小于20℃·结合脉冲磁场参数对晶化量的影响,初步探讨了脉冲磁场对非晶合金Fe78Si9B13纳米晶化的作用机制·The treatment of low-frequency pulsating magnetic field is a brand-new process for the nano-crystallization of amorphous alloy without heat treatment. The specimens of the alloy Fe_(78)Si_9B_(13) after such a treatment were observed by Mssbauer spectroscopy and TEM. The results showed that the low-frequency pulsating magnetic field will expedite the nano-crystallization process of the amorphous alloy Fe_(78)Si_9B_(13), by which the crystalline grain size is about 2～10?nm with a rise in temperature lower than 20?℃ under conditions of the parameters used in test. The nano-crystallization mechanism was discussed preliminarily in combination with the effect of the parameters of pulsating magnetic field on the crystalline-phase content.

关 键 词：非晶合金 Fe_(78)Si_(9)B_(13) 纳米晶化 脉冲磁场 穆斯堡尔谱 晶化机理 

分 类 号：TG132.271[一般工业技术—材料科学与工程]