Optimum Soft Magnetic Properties of the FeSiBNbCu Alloy Achieved by Heat Treatment and Tailoring B/Si Ratio

To increase the saturation magnetization (Ms) of commercially available soft magnetic Finemet alloys to the level comparable to that of Si-steel and Fe-based nanocrystalline alloys such as Nanoperm, Nanomet, the B or Si content in combination with annealing heat treatment was tailored. The ribbons of Fe95−xSi1BxNb3Cu1 (x = 11, 12, 13) and Fe87−xSixB9Nb3Cu1 (x = 6, 8, 10) were prepared by melt-spinning and annealed at different temperatures to develop nanocrystalline microstructure optimizing the soft magnetic properties. The magnetic properties of the as-spun and annealed ribbons were measured using a vibrating sample magnetometer and AC B-H loop tracer to acquire Ms of above 1.4 T in all as-spun ribbons. Among the alloys, Fe84Si1B11Nb3Cu1 annealed at 545 °C showed the highest Ms of 2 T, which exceeds that of the conventional Finemet and other Fe-based nanocrystalline alloys.

Download Full-text

Significant improvement of soft magnetic properties for Fe-based nanocrystalline alloys by inhibiting surface crystallization via a magnetic field assisted melt-spinning process

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2019.03.110 ◽

2019 ◽

Vol 483 ◽

pp. 158-163 ◽

Cited By ~ 8

Author(s):

Lei Xie ◽

Anding Wang ◽

Shiqiang Yue ◽

Aina He ◽

Chuntao Chang ◽

...

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Melt Spinning ◽

Nanocrystalline Alloys ◽

Surface Crystallization ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Spinning Process

Download Full-text

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.800.302 ◽

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.

Download Full-text

Improvement of soft magnetic properties in Fe38Co38Mo8B15Cu amorphous and nanocrystalline alloys by heat treatment in external magnetic field

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2010.04.033 ◽

2010 ◽

Vol 504 ◽

pp. S135-S138 ◽

Cited By ~ 29

Author(s):

I. Škorvánek ◽

J. Marcin ◽

J. Turčanová ◽

J. Kováč ◽

P. Švec

Keyword(s):

Magnetic Field ◽

Heat Treatment ◽

Magnetic Properties ◽

External Magnetic Field ◽

Nanocrystalline Alloys ◽

Soft Magnetic Properties ◽

Soft Magnetic

Download Full-text

The Effect of Heat Treatment on the Magnetic Properties of Nanocrystalline Fe-Ni-Si Powders

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.829.693 ◽

2013 ◽

Vol 829 ◽

pp. 693-697 ◽

Cited By ~ 1

Author(s):

Paniz Foroughi ◽

Mohammadamin Moghadasi

Keyword(s):

Heat Treatment ◽

Magnetic Properties ◽

Annealing Temperature ◽

Annealed Sample ◽

Vibrating Sample Magnetometer ◽

Soft Magnetic ◽

Magnetic Composites ◽

Three Samples ◽

Stress Relieving ◽

Different Temperatures

This paper investigates the effect of heat treatment on the magnetic properties of nanocrystalline Fe-Ni-Si powders prepared by mechanical alloying method which can be used in soft magnetic composites fabrication. Fe-85%, Si-10% and Ni-5% alloys were prepared using a vibrating disc mill. The magnetic properties of the samples were measured by a vibrating sample magnetometer (VSM) and the microstructural properties of the un annealed sample were measured by XRD and SEM. Three samples were annealed in three different temperatures from 500 °C to 600 °C and were compared with a sample without annealing. It was found that with increasing the annealing temperature, stress relieving and crystallite size increased whereas microstrain and saturation magnetization decreased.

Download Full-text