脉冲磁场处理Fe52Co34Hf7B6Cu1非晶的低温真空退火效应

金属学报, 2012, 48(6): 749-752. doi: 0.3724/SP.J.1037.2011.00648

脉冲磁场处理Fe₅₂Co₃₄Hf₇B₆Cu₁非晶的低温真空退火效应

晁月盛 , 王莉 , 张艳辉 , 朱涵娴 , 罗丽平

东北大学理学院, 沈阳 110819

College of Sciences, Northeastern University, Shenyang 110819

基金项目: Fe(Co)-M-B-Cu非晶的磁致纳米晶化及其经验电子理论研究

关键词：非晶合金 , magnetic pulsing , two-phases nanocrystalline alloy , low-temperature vacuum annealing , magnetic property

EFFECT OF LOW-TEMPERATURE VACUUM ANNEALING ON THE MAGNETIC PULSED AMORPHOUS Fe₅₂Co₃₄Hf₇B₆Cu₁ ALLOY

CHAO Yuesheng , WANG Li , ZHANG Yanhui , ZHU Hanxian , LUO Liping

Keywords： amorphous alloy , 磁脉冲处理 , 双相纳米合金 , 真空低温退火 , 磁性能

对Fe₅₂Co₃₄Hf₇B₆Cu₁非晶合金进行了低频磁脉冲处理,研究低温真空退火对磁脉冲处理Fe₅₂Co₃₄Hf₇B₆Cu₁非晶软磁性能的影响. 结果表明, 磁脉冲处理导致非晶合金发生纳米晶化,析出晶态相α-Fe(Co), 晶粒尺寸为5-10 nm, 形成的纳米晶粒弥散分布于非晶基体的双相纳米合金中. 对磁脉冲处理的试样进行低温真空退火,可以进一步优化纳米合金的软磁性能, 在100 ℃退火可以得到最佳的软磁性能.

The nanocrystalline Fe₅₂Co₃₄Hf₇B₆Cu₁soft magnatic alloys composed of bcc-Fe nanocrystals embedded in a residual amorphous matrix were obtained by the magneto-crystallization of melt-spun ribbons. In order to improve the soft magnetic properties of double--phase Fe(Co)--based nanocrystalline alloy, the nanocrystalline alloy specimens were vacuum annealed for 30 min at 100, 200 and 300 ℃. The results showed that the treatment of magnetic pulsing on the amorphous alloy resulted in the nanocrystallization, the grain size of precipitated α-Fe(Co) nanocrystallized phase was 5-10 nm. The low-temperature vacuum annealing of magnetic pulsed specimens further improved the soft magnetic properties of nanocrystalline alloy. The influence of annealing at 100 ℃ for 30 min on the properties is most obvious.

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