Microstructure and magnetic properties of amorphous Fe78Si9B13 alloy in low frequency pulse magnetic field

被引：0

作者：

Zhang Yanhui ^{[1
]}

Chao Yuesheng ^{[1
]}

机构：

[1] Northeastern Univ, Shenyang 110004, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷 / 08期

关键词：

low-frequency pulse magnetic field; Fe78Si9B13 amorphous alloy; nano-crystallization; microstructure; magnetic property; NANOCRYSTALLINE FERROMAGNETS; GRAIN-STRUCTURE; CRYSTALLIZATION;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of low-frequency pulse magnetic field on the microstructure and magnetic properties of amorphous alloy Fe78Si9,B-13 were investigated. The temperature rise of specimens was measured by a noncontact infrared thermometer during processing. The crystallization behavior and microstructure of specimens were studied by Mossbauer spectroscopy and TEM. The magnetic properties of specimens were investigated by alternating gradient magnetometer (AGM). The results show that the single phase crystallization of the Fe78Si9B13 amorphous alloy can be promoted with crystallization phase of alpha-Fe(Si) and grain size of 2 similar to 10 nm by the low-frequency pulse magnetic field of 10 similar to 40 Hz, magnetic field strength H of (100 similar to 400)x79.6 A/m and applied time t of 180 similar to 300 s. The volume fraction of crystallization phase is 3%similar to 7% with a temperature rise of less than 7 degrees C. The magnetic properties of sample can be improved to the saturation induction B-s of 1.74 T and the coercive force H-c of 0.13x79.6 A-m(-1) for the Sample No.9 at 40 Hz and 300x79.6 A-m(-1) for 300 s.

引用

页码：1469 / 1472

页数：4

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