Effects of Hf addition on the microstructure, magnetic properties and coercivity mechanism of Nd-Ce-Fe-B ribbons fabricated by melt-spinning technique

2019 ◽  
Vol 474 ◽  
pp. 305-310 ◽  
Author(s):  
Lili Zhang ◽  
Qingzheng Jiang ◽  
Lei Wang ◽  
Qichen Quan ◽  
Sajjad Ur Rehman ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Melt Spinning ◽  
Hf Addition ◽  
Coercivity Mechanism ◽  
Melt Spinning Technique

Magnetic properties of the Heusler alloy Co2TiAl synthesized by melt-spinning technique

2007 ◽  
Vol 431 (1-2) ◽  
pp. 65-67 ◽  
Author(s):  
Wei Zhang ◽  
Lei Zhao ◽  
Zhengnan Qian ◽  
Yu Sui ◽  
Yuqiang Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Heusler Alloy ◽  
Melt Spinning ◽  
Melt Spinning Technique

Preparation and Characterization of the Soft Magnetic FeCo-based Amorphous Alloy with Enhanced Magnetic Properties and Thermal Stability

2000 ◽  
Vol 644 ◽  
Author(s):  
Martin Hollmark ◽  
Victor Tkatch ◽  
Sergey Khartsev ◽  
Alex Grishin
Keyword(s):  
Thermal Stability ◽  
Magnetic Properties ◽  
Melt Spinning ◽  
Crystallization Process ◽  
Eutectic Reaction ◽  
Soft Magnetic ◽  
Differential Permeability ◽  
Thermal Stability Of ◽  
Melt Spinning Technique

AbstractA glassy structure was formed in the Fe40Co40P14B6 alloy by melt-spinning technique. The as-quenched 2-8 mm wide and 15-30 [.proportional]m thick ribbons exhibit good soft magnetic properties: the saturation magnetization of 1.45 T, the coercive force of 4 A/m and maximum differential permeability at 60 Hz of about 90000. The FeCo-based glass crystallizes via eutectic reaction into a mixture of an austenite and a b.c. tetragonal Fe3P-like phase similar to that of the well-known Fe40Ni40P14B6metallic glass, but at temperatures about 60 K higher than the latter. The evaluation of the thermodynamic and kinetic parameters of crystallization process brought us to the conclusion that the improved thermal stability of the Fe40Co40P14B6 glass is caused by the enhanced interfacial nucleus-glass energy.

Structural Studies of the Relaxed Amorphous Phase in the Fe81B14Nb5 Alloy

2013 ◽  
Vol 203-204 ◽  
pp. 380-385 ◽  
Author(s):  
Małgorzata Karolus
Keyword(s):  
Magnetic Properties ◽  
Amorphous Phase ◽  
Magnetic Permeability ◽  
Amorphous Alloys ◽  
Melt Spinning ◽  
Soft Magnetic Materials ◽  
Soft Magnetic Properties ◽  
Structural Studies ◽  
Soft Magnetic ◽  
Melt Spinning Technique

Amorphous alloys based on iron, obtained by melt spinning technique, are modern and very promising soft magnetic materials. The thermal annealing at temperatures closed to the crystallization temperature can cause an increase of magnetic permeability more than 10 times i.e. the so called enhancement of soft magnetic properties effect (ESMP). It is usually explained by formation of iron nanocrystallites in amorphous surroundings or by formation of the relaxed amorphous phase. Such a microstructure leads to averaging out of magnetic anisotropy and cause the ESMP.

Enhanced Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt-Spinning Technique

2017 ◽  
Vol 48 (10) ◽  
pp. 5017-5030 ◽  
Author(s):  
Sultan Öztürk ◽  
Kürşat İcin ◽  
Bülent Öztürk ◽  
Uğur Topal ◽  
Hülya Kaftelen Odabaşı ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Melt Spinning ◽  
Nd15fe77b8 Alloy ◽  
Melt Spinning Technique

scholarly journals Magnetic Properties and Core Loss Behavior of Fe-6.5wt.%Si Ribbons Prepared by Melt Spinning

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
S. Wang ◽  
Y. M. Jiang ◽  
Y. F. Liang ◽  
F. Ye ◽  
J. P. Lin
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Cold Rolling ◽  
Melt Spinning ◽  
Core Loss ◽  
Melt Spinning Technique

Fe-6.5wt.%Si alloy is prepared in the form of continuous ribbons with 25 mm in width and 0.03 mm in thickness by using melt spinning technique. The ribbons are flexible and could be wounded into tapes. DC magnetic properties and core loss behaviors of the ribbons after heat treatment are investigated in this paper. The magnetic properties are compared with ribbons by cold rolling and CVD methods. The melt spinning ribbons exhibit much less core loss in the frequencies more than 10 kHz. The melt spinning ribbons are promising to be used for electric devices used in medium or higher frequencies.

Innovative Melt-Spinning Technique for Ferromagnetic Amorphous Ribbons

1985 ◽  
Vol 58 ◽  
Author(s):  
H. Y. Yu ◽  
D. R. Huang ◽  
P. C. Yao ◽  
S. E. Hsu
Keyword(s):  
Magnetic Properties ◽  
External Field ◽  
Magnetic Moment ◽  
Melt Spinning ◽  
Amorphous Ribbon ◽  
Initial Permeability ◽  
Field Direction ◽  
Amorphous Ribbons ◽  
Melt Spinning Technique

ABSTRACTA new melt-spinning technique (field quenching) for ferromagnetic amorphous ribbon is suggested to produce better magnetic properties than conventional as-quenched amorphous ribbon. An external field is applied during the quenching either parallel or perpendicular to the casting direction. The magnetic moment and initial permeability are increased when the field direction is parallel to the casting direction. These effects are opposite when these two directions mentioned are perpendicular to each other.

scholarly journals Fabrication and Magnetic Properties of \(\text{Nd}_2\text{Fe}_{14}\text{B/Fe}_{65}\text{Co}_{35}\) Hard Magnetic Ribbons

2013 ◽  
Vol 23 (2) ◽  
pp. 147
Author(s):  
Nguyen Xuan Truong ◽  
Nguyen Van Khanh
Keyword(s):  
Magnetic Properties ◽  
Free Surface ◽  
Melt Spinning ◽  
Maximum Energy ◽  
Homogeneous Distribution ◽  
Maximum Energy Product ◽  
Energy Product ◽  
Magnetic Remanence ◽  
Intrinsic Coercivity ◽  
Melt Spinning Technique

Nd\(_2\)Fe\(_{14}\)B/Fe\(_{65}\)Co\(_{35}\) hard magnetic ribbons were fabricated by melt-spinning technique using Nd\(_{16}\)Fe\(_{76}\)B\(_{8 }\) and Fe\(_{65}\)Co\(_{35}\) pre-alloys as starting materials. The results showed that the formation of the interactive hard/soft nanocomposite with the homogeneous distribution of the Fe-Co phase throughout the Nd\(_{2}\)Fe\(_{14}\)B matrix provided the Curie temperature (\(T_{c})\) as high as 747 K, the magnetic remanence (B\(_{r}\)) of 8.88 kG and the maximum energy product, (BH)\(_{\max}\), of 16.75 MG.Oe for the fabricated Nd\(_{2}\)Fe\(_{14}\)B/Fe\(_{65}\)Co\(_{35}\) ribbons at the optimal speed of 25 m/s. In addition, the intrinsic coercivity (\(_{i}\)H\(_{c}\)) of 9.27 kOe and remanence coercivity (\(_{b}\)H\(_{c}\)) of 6.94 kOe were found for these ribbons. The roles of the soft Fe\(_{65}\)Co\(_{35}\) phase in the increasing of \(T_{c}\), \(B_{r}\) as well as in the (00l) preferred crystallographic orientation of hard magnetic grains on the free surface side of the fabricated ribbons were also discussed.

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