Influence of mechanical alloying on the particle size, microstructure and soft magnetic properties of coarse Fe-based amorphous powders prepared by gas atomization

2021 ◽  
Vol 559 ◽  
pp. 120675
Author(s):  
Chaorun Si ◽  
Ziqian Zhang ◽  
Qi Zhang ◽  
Jin Cai
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Mechanical Alloying ◽  
Soft Magnetic Properties ◽  
Gas Atomization ◽  
Soft Magnetic ◽  
Amorphous Powders

scholarly journals Strategy to Enhance Magnetic Properties of Fe78Si9B13 Amorphous Powder Cores in the Industrial Condition

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 381 ◽  
Author(s):  
Haibo Sun ◽  
Ce Wang ◽  
Weihong Chen ◽  
Jiexin Lin
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Effective Permeability ◽  
Industrial Condition ◽  
Collaborative Optimization ◽  
Molding Pressure ◽  
Process Conditions ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Coating Agent

In this study, the soft magnetic properties of Fe78Si9B13 amorphous magnetic powder cores (AMPCs) were enhanced by coordinately adjusting the technological parameters, including the particle size distribution, molding pressure, and coating agent content, in the industrial condition. The results show that the optimized comprehensive soft magnetic properties of the Fe78Si9B13 AMPCs could be obtained under the following process conditions: (1) the distribution of particle size is 20 wt.% for 140–170 mesh, 70 wt.% for 170–270 mesh, and 10 wt.% for 270–400 mesh; (2) the molding pressure is in the range of 2.35–2.45 GPa; and (3) the additive amount of sodium silicate is 1.5 wt.%. After the collaborative optimization, the AMPCs’ compact density, ρ, the effective permeability, μe, and the residual effective permeability at the applied magnetizing field of 7.96 kA/m, μ[email protected] kA/m, increased from 5.61 g/cm3 to 5.86 g/cm3, from 58.13 to 77.01, and from 40.36 to 49.57, respectively. The attenuation ratio of the effective permeability, when in the frequency band of 20–100 kHz, was less than 0.85%. The core loss at the 50 kHz for the maximum magnetic flux density of 0.1 T reduced from 380.85 mW/cm3 to 335.23 mW/cm3. This work will encourage the further application of Fe-based AMPCs in the fields of electronics and telecommunication.

Structural and soft magnetic properties of nanocrystalline Fe85Si10Ni5 powders prepared by mechanical alloying

2006 ◽  
Vol 60 (8) ◽  
pp. 1068-1070 ◽  
Author(s):  
A. Bahrami ◽  
H.R. Madaah Hosseini ◽  
P. Abachi ◽  
S. Miraghaei
Keyword(s):  
Magnetic Properties ◽  
Mechanical Alloying ◽  
Soft Magnetic Properties ◽  
Soft Magnetic

The Magnetic Properties of Fe-6.5wt.%Si Alloy Powders Produced by High Pressure Gas Atomization

2013 ◽  
Vol 800 ◽  
pp. 302-307
Author(s):  
Ke Xie ◽  
Chang Jiang Song ◽  
Ke Feng Li ◽  
Liang Zhu ◽  
Qi Jie Zhai
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
Magnetic Properties ◽  
Atmospheric Environment ◽  
Powder Size ◽  
Soft Magnetic Properties ◽  
Gas Atomization ◽  
Vibrating Sample Magnetometer ◽  
Soft Magnetic ◽  
Optimal Capacity

The soft magnetic properties of Fe-6.5wt.%Si alloy powders produced via high pressure gas atomization under different powder sizes, environments (atmospheric and vacuum) and heat-treatment were presented by vibrating sample magnetometer (VSM), respectively. It is found that the soft magnetic properties of powder gradually grow up as the increasing of the powder size under atmospheric and vacuum environments. However, the using of vacuum environment has an optimal capacity to strengthening the properties rather than atmospheric environment. The heat-treatment of 1000°C for 2 hours offers considerable potential for improving the soft magnetic properties of the powders.

Soft magnetic properties of Fe-B prepared by mechanical alloying

1995 ◽  
Vol 33 (10-11) ◽  
pp. 1725-1730 ◽  
Author(s):  
L. Giri ◽  
Anit K. Giri ◽  
J.M. González
Keyword(s):  
Magnetic Properties ◽  
Mechanical Alloying ◽  
Soft Magnetic Properties ◽  
Soft Magnetic

Soft magnetic properties of bulk nanocrystalline Fe(Nb, Zr, Hf)B alloys produced by extruding amorphous powders

1996 ◽  
Vol 162 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Akinori Kojima ◽  
Hidehiko Horikiri ◽  
Yoshihito Kawamura ◽  
Akihiro Makino ◽  
Akihisa Inoue ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Amorphous Powders ◽  
Bulk Nanocrystalline

scholarly journals Investigation of Mechanical and Magnetic Properties of Co-Based Amorphous Powders Obtained by Atomization

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7357
Author(s):  
Anna Kuś ◽  
Wirginia Pilarczyk ◽  
Aleksandra Małachowska ◽  
Andrzej Ambroziak ◽  
Piotr Gębara
Keyword(s):  
Magnetic Properties ◽  
Metallic Glasses ◽  
Gas Atomization ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Hard Magnetic Materials ◽  
Glass Forming ◽  
Elastic Module ◽  
Powder Particles ◽  
Amorphous Powders

Properties of Co-based alloys with high Glass Forming Ability (GFA) in the form of powder are still not widely known. However, powders of high GFA alloys are often used for the development of bulk metallic glasses by additive manufacturing. In this work Co47.6B21.9Fe20.4Si5.1Nb5% at. and Co42B26.5Fe20Ta5.5Si5Cu1% at. were developed by gas-atomization. Obtained powders in size 50–80 µm were annealed at Tg and Tx of each alloy. Then SEM observation, EDS analyses, differential thermal analysis, X-ray diffraction, nanoindentation, Mössbauer, and magnetic properties research was carried out for as-atomized and annealed states. The gas atomization method proved to be an efficient method for manufacturing Co-based metallic glasses. The obtained powder particles were spherical and chemically homogeneous. Annealing resulted in an increase of mechanical properties such as hardness and the elastic module of Co47.6B21.9Fe20.4Si5.1Nb5% at and Co42B26.5Fe20Ta5.5Si5Cu1%, which was caused by crystallization. The magnetic study shows that Co47.6B21.9Fe20.4Si5.1Nb5 and Co42B26.5Fe20Ta5.5Si5Cu1 are soft magnetic and semi-hard magnetic materials, respectively.

Soft Magnetic Properties of Fe-Ti-N Alloy Thin Films

1998 ◽  
Vol 22 (4_1) ◽  
pp. 186-189
Author(s):  
M. Matsumoto ◽  
A. Morisako ◽  
Y. Mutoh
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Soft Magnetic Properties ◽  
Soft Magnetic
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