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.

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

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1297
Author(s):  
Jonghee Han ◽  
Seoyeon Kwon ◽  
Sungwoo Sohn ◽  
Jan Schroers ◽  
Haein Choi-Yim
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Melt Spinning ◽  
Nanocrystalline Alloys ◽  
Soft Magnetic Properties ◽  
Vibrating Sample Magnetometer ◽  
Soft Magnetic ◽  
Different Temperatures ◽  
Annealing Heat Treatment ◽  
Si Content

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.

Effect of heat treatment process on the structural and soft magnetic properties of Fe38Co38Mo8B15Cu ribbons

2020 ◽  
Vol 527 ◽  
pp. 119745 ◽  
Author(s):  
Sultan Öztürk ◽  
Kürşat İçin ◽  
Merve Gençtürk ◽  
Metin Göbülük ◽  
Peter Svec
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Treatment Process ◽  
Soft Magnetic Properties ◽  
Heat Treatment Process ◽  
Soft Magnetic

Effects of Current Pulsation on Magnetic Properties and Giant Magnetoimpedance of Electrodeposited NiFe Coatings on Cu Wires

2018 ◽  
Vol 928 ◽  
pp. 235-242 ◽  
Author(s):  
Viriyah Chobaomsup ◽  
Pongsakorn Jantaratana ◽  
Yuttanant Boonyongmaneerat
Keyword(s):  
Magnetic Properties ◽  
Soft Magnetic Properties ◽  
Vibrating Sample Magnetometer ◽  
Electrodeposition Technique ◽  
Soft Magnetic ◽  
Applied Current ◽  
Giant Magnetoimpedance ◽  
Nickel Iron ◽  
Fe Content ◽  
Current Pulsation

This work presents a systematic study of the effects of current pulsation on soft magnetic properties and giant magnetoimpedance (GMI) of nickel-iron (NiFe) coatings electrodeposited on copper wires. The specimens were prepared by the electrodeposition technique with controlled bath compositions and varied applied current waveforms. The microstructural and chemical investigations indicate that current pulsation with 50% duty cycle and 50 Hz frequency provides significantly smoother coating surface of uniform nodules, with comparable Fe content but different phase composition, as compared to the direct current condition. The vibrating sample magnetometer evidently shows that the deposits prepared with a pulsed current exhibit relatively small coercivity, below 4 Oe. Using the four-point probe technique, the MI ratio of the pulse deposits is found to reach a significantly high value above 2,000% with decent sensitivity. The benefits of current pulsation in improving the characteristics of NiFe deposits, and correspondingly the alloys’ soft magnetic properties and MI effects are demonstrated.

Preparation of FePt Film via Electrochemical Deposition Method

2011 ◽  
Vol 415-417 ◽  
pp. 1933-1937
Author(s):  
Ying Ying Shen ◽  
Xue Yan Du ◽  
Shi Yi Shi ◽  
Cui Xia Li
Keyword(s):  
Magnetic Properties ◽  
Soft Magnetic Properties ◽  
Face Centered Cubic ◽  
Vibrating Sample Magnetometer ◽  
Deposition Method ◽  
Soft Magnetic ◽  
Fept Film ◽  
Applied Pulse ◽  
Electrochemical Deposition Method ◽  
Face Centered

Abstract. A FePt codeposition film was prepared via electrochemical codeposition process, where FeSO4•7H2O and H2PtCl6•6H2O were used as Fe source and Pt source，respectively. The composition and morphology of the FePt film were determined by the applied pulse potentials. Vibrating Sample Magnetometer (VSM) study show that the FePt film with Fe/Pt=1:1 was of soft magnetic properties, and its structure transformed from face-centered-cubic (fcc) to face-centred-tetragonal (fct) structure partly after it was annealed at 550°C for 30min in hydrogen (H2).

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