超短脉冲电流处理Fe_(78)Si_9B_(13)的原子间力与脆性的研究  

Investigation of the force between atoms and brittleness of Fe_(78)Si_9B_(13) treated by ultra-short pulsing current

作　　者：李晶[1] 晁月盛[2] 文小艳[1] 

机构地区：[1]华北科技学院基础部,北京101601 [2]东北大学理学院,辽宁沈阳110004

出　　处：《云南大学学报（自然科学版）》2005年第S3期567-572,共6页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：改变超短电脉冲电流条件,对电脉冲处理后的非晶Fe78Si9B13用Mo¨ssbauer谱方法进行了原子间力研究,用相对断裂应变法进行了脆性研究.发现当脉冲频率较低时间较短时,随着脉冲电流密度的增加,非晶脆性并没有多大改变;而当频率较大时间较长时,非晶Fe78Si9B13的脆性呈逐渐增加的趋势,而原子间力基本呈逐渐减小的趋势,这时脆性的增加主要是由于原子间力减小的结果.Investigation of the force between atoms by Mssbauer spectrum technology and brittleness by relative rupture-strain measurement has been done after amorphous Fe_(78)Si_9B_(13) alloy is tread by different ultra-short pulsing current.It is found that brittleness of amorphous Fe_(78)Si_9B_(13) alloy has been not changed obviously when pulsing current frequency and acting time is less and brittleness of amorphous alloy Fe_(78)Si_9B_(13) has been increased when pulsing current frequency and acting time is more as increasing of pulsing current density.In the second process,decrease of the force between atoms leads increase of brittleness of amorphous Fe_(78)Si_9B_(13) alloy.

关 键 词：电脉冲 FE78SI9B13 脆性 原子间力 

分 类 号：TB383.4[一般工业技术—材料科学与工程]