Low-Temperature Annealing on Treated of Pulsating Magnetic Field Fe-Co-M-B-Cu Amorphous

2016 ◽  
Vol 852 ◽  
pp. 176-180
Author(s):  
Yan Hui Zhang ◽  
Yue Sheng Chao ◽  
Ying Jin
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Vacuum Annealing ◽  
Nanocrystalline Alloy ◽  
Magnetic Pulse ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Vacancy Defects ◽  
Low Temperature Annealing ◽  
Cu Alloys

After the medium-frequency magnetic pulse treating (frequency 1500-2000Hz, field intensity 200-250Oe) on amorphous Fe (Co)-M-B-Cu alloys, the vacuum anealing at low-temperature were in progress at 50°C-100°C for 30 min and 60 min. The soft magnetic properties of nanocrystalline alloy obtained by above mentioned treatments were measured by the vibrational specimen magnetometer. The results show that the structral relaxation , free volume migration and annihilation during the vacuum annealing will lead to the reduction of like-vacancy defects concentration and distortion stress. So the soft magnetic properties of nanocrystalline alloy will be improved further.

Industrialization of a FeSiBNbCu nanocrystalline alloy with high Bs of 1.39 T and outstanding soft magnetic properties

2018 ◽  
Vol 29 (22) ◽  
pp. 19517-19523 ◽  
Author(s):  
Huiyun Xiao ◽  
Anding Wang ◽  
Chengliang Zhao ◽  
Aina He ◽  
Guoyang Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Nanocrystalline Alloy ◽  
Soft Magnetic Properties ◽  
Soft Magnetic

Soft magnetic properties of a high temperature CoFeSiBNb nanocrystalline alloy

2007 ◽  
Vol 316 (2) ◽  
pp. e886-e889 ◽  
Author(s):  
A.K. Panda ◽  
O. Mohanta ◽  
A. Mitra ◽  
D.C. Jiles ◽  
C.C.H. Lo ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
Nanocrystalline Alloy ◽  
Soft Magnetic Properties ◽  
Soft Magnetic

Alloy Elements Added in Fe-6.5wt% Si Silicon Steel and their Effect on Ductility and Magnetic Properties

2013 ◽  
Vol 750-752 ◽  
pp. 426-430
Author(s):  
Zhao Yang Cheng ◽  
Jing Liu ◽  
Wen Si Chen ◽  
Guo Dong Sun ◽  
Xi Feng Lin ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Room Temperature ◽  
Silicon Steel ◽  
Soft Magnetic Properties ◽  
Action Mechanism ◽  
Soft Magnetic ◽  
Research Status

Fe-6.5wt%Si silicon steel has excellent soft magnetic properties, but its ductility in room temperature is near zero. A lot of researchers tried to improve the ductility by adding alloy elements. In this paper, we summarized the action mechanism and the content of these alloy elements according to the overseas and domestic research status. Al, B, Cr, RE, et al. improved the ductility of Fe-6.5wt%Si silicon steel in low temperature, but reduced its magnetic properties simultaneously. Ni, Ti, Mn, et al. improved the ductility of Fe-6.5wt%Si silicon steel inconspicuously.

Soft Magnetic Properties of Nanocrystalline Fe–Co–B–Si–Nb–Cu Alloys in Ribbon and Bulk Forms

2003 ◽  
Vol 18 (12) ◽  
pp. 2799-2806 ◽  
Author(s):  
Akihisa Inoue ◽  
Baolong Shen
Keyword(s):  
Magnetic Properties ◽  
Melt Spinning ◽  
Glassy Alloy ◽  
Nanocrystalline Alloy ◽  
Supercooled Liquid ◽  
Supercooled Liquid Region ◽  
Exothermic Peak ◽  
Liquid Region ◽  
Soft Magnetic Properties ◽  
Soft Magnetic

Ribbon and bulk nanocrystalline body-centered-cubic (bcc) (Fe,Co) alloys exhibiting good soft magnetic properties were synthesized in Fe71.5-xCoxB13.5Si10Nb4Cu1 system by the simple production processes of melt-spinning or casting and annealing. The glass-type alloys were formed in the Co content range below 30 at.%. These glassy alloys crystallized through two exothermic reactions. The first stage was due to the precipitation of nanoscale bcc-(Fe,Co) phase with a grain size of about 10 nm, and the second stage resulted from the decomposition of the remaining amorphous phase to α–(Fe,Co), (Fe,Co)2B, (Fe,Co)23B6, (Fe,Co)3Si, and (Fe,Co)2Nb phases. The glass transition temperature increased from 820 to 827 K with increasing Co content from 5 to 20 at.%, while the supercooled liquid region decreased slightly from 37 to 30 K because of the nearly constant crystallization temperature. By choosing the 10 at.% Co-containing alloy, we produced cylindrical glassy alloy rods 1.0 and 1.5 mm in diameter by copper mold casting. The subsequent annealing for 300 s at 883 K corresponding to the temperature just above the first exothermic peak caused the formation of nanoscale bcc-(Fe,Co) structure. The bcc-(Fe,Co) alloy rods exhibited good soft magnetic properties of 1.26 T for saturation magnetization and 5.0 A/m for coercive force, which were comparable to those for the corresponding bcc-(Fe,Co) alloy ribbon. The nanocrystalline alloy in a bulk form is encouraging for future use as a new type of soft magnetic material that requires three-dimensional shapes.

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