Structure and magnetic properties of powdered and compacted FeNi alloys

Abstract The crystalline ferromagnetic alloys are known as materials with excellent soft magnetic properties. These alloys have been intensive studied during last decades due to their mechanical and magnetic properties and they are challenge for scientists to extend research of these materials with the aim to broaden their technical applications. FeNi based alloys exhibit very good soft magnetic properties with near-to-zero magnetostriction. This property renders this material as a potential candidate for a differently of industrial applications.

Download Full-text

Glass formation, nanocrystallisation and magnetic properties of the (Fe1–xCox)79Nb3B18 (x = 0, 0.15, 0.3, 0.45, 0.6, 0.75) metallic glasses

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.1515/ijmr-2020-1110710 ◽

2020 ◽

Vol 111 (7) ◽

pp. 600-606

Author(s):

Lijuan Yao ◽

Man Zhu ◽

Kun Li ◽

Zengyun Jian ◽

Fang’e Chang

Keyword(s):

Magnetic Properties ◽

Electrical Resistivity ◽

Supercooled Liquid ◽

Supercooled Liquid Region ◽

Industrial Applications ◽

Liquid Region ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Glassy Alloys ◽

Saturation Magnetisation

Abstract The glass-forming ability (GFA), nanocrystallisation, electrical resistivity and soft magnetic properties of (Fe1-xCox)79Nb3B18 (x = 0, 0.15, 0.3, 0.45, 0.6, 0.75) glassy alloys were investigated. We found that the substitution of Fe by Co is beneficial for improving the GFA. As-spun (Fe0.55Co0.45)79Nb3B18 glassy alloys show the best GFA, along with excellent soft magnetic properties in the supercooled liquid region, with a saturation magnetisation and coercivity of 140 A · m2 · kg-1 and 19.9 A · m-1, respectively, at 60 K. With increasing Co content, the electrical resistivity initially decreases rapidly, and then fluctuates around approximately 70 ± 4 μΩ cm. With increasing the annealing temperature, the saturation magnetisation improves initially, but then decreases for the (Fe0.4Co0.6)79Nb3B18 alloy, and the coercivity does not significantly improve. These newly developed FeCoNbB multicomponent alloys exhibit appreciable GFA, good magnetic properties and low material cost, and they can serve as a promising soft magnetic material for use in industrial applications.

Download Full-text

Effect of heat treatment on the shape of the hyperfine field induction distributions and magnetic properties of amorphous soft magnetic Fe62Co10Y8B20 alloy

Nukleonika ◽

10.1515/nuka-2015-0007 ◽

2015 ◽

Vol 60 (1) ◽

pp. 23-27 ◽

Cited By ~ 7

Author(s):

Konrad M. Gruszka ◽

Marcin Nabiałek ◽

Katarzyna Błoch ◽

Jacek Olszewski

Keyword(s):

Heat Treatment ◽

Magnetic Properties ◽

Hyperfine Field ◽

Structural Defects ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Field Induction ◽

Ferromagnetic Alloys ◽

Field Distributions ◽

Hyperfine Field Distributions

Abstract Thermal treatment, undertaken at just below the crystallization temperature, has led to nanocrystallization and has had a significant impact on the shape of the hyperfine field induction distributions of Fe62Co10Y8B20 alloy and on its soft magnetic properties. In the amorphous ferromagnetic alloys, it is possible to indirectly determine the effect of the structure stresses, resulting from the presence of structural defects, on the soft magnetic properties of these materials. It has been found that a change in the parameters associated with the presence of structural defects affects the shape of the hyperfine field distributions of 57Fe.

Download Full-text

FeSiBPNbCu Bulk Nanocrystalline Alloys with High GFA and Excellent Soft-Magnetic Properties

Metals ◽

10.3390/met9020219 ◽

2019 ◽

Vol 9 (2) ◽

pp. 219 ◽

Cited By ~ 1

Author(s):

Lei Liu ◽

Bang Zhou ◽

Yiqun Zhang ◽

Aina He ◽

Tao Zhang ◽

...

Keyword(s):

Thermal Stability ◽

Magnetic Properties ◽

Crystallization Temperature ◽

Industrial Applications ◽

Nanocrystalline Alloys ◽

Soft Magnetic Materials ◽

Second Phase ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Bulk Nanocrystalline

(Fe0.76Si0.09B0.1P0.05)99.3−xNbxCu0.7 (x = 0–1.5 at. %) bulk nanocrystalline alloys were prepared to investigate the alloying effects of Nb on glass forming ability, thermal stability, soft magnetic properties, and crystallization behavior. It was found that the amorphous forming ability was greatly improved with the addition of minor Nb. The thermal stability of Nb-containing alloy was significantly improved because the initial crystallization temperature and crystallization activation of the primary phase were obviously better than that of the Nb-free alloy. Further, the larger intervals of two-phase crystallization temperature and the significantly higher activation energy of crystallization of the second phase in the Nb-containing alloys favor the formation of a single α-Fe(Si) nanocrystalline structure. Moreover, Nb-containing alloys exhibit excellent soft magnetic properties, including high saturation magnetization of 1.42–1.49 T, low coercivity of around 1.0 A/m, and high permeability of about 18,000 at 1 kHz, which makes the alloys promising soft magnetic materials for industrial applications.

Download Full-text

Glass formation, magnetic properties, and electrical resistivity of the multi-component FeNbBCuNiCo amorphous alloys

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.1515/ijmr-2020-8055 ◽

2021 ◽

Vol 112 (2) ◽

pp. 137-142

Author(s):

Man Zhu ◽

Chi Zhang ◽

Tao Xu ◽

Lijuan Yao ◽

Yongqin Liu ◽

...

Keyword(s):

Thermal Stability ◽

Magnetic Properties ◽

Electrical Resistivity ◽

Amorphous Alloys ◽

Low Cost ◽

Industrial Applications ◽

High Thermal Stability ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Scanning Calorimetry

Abstract The effects of additions of Co and Ni to the FeNbBCu alloys on the glass forming ability (GFA), soft magnetic properties and electrical resistivity of Fe-based amorphous alloys were studied by means of X-ray diffraction, differential scanning calorimetry, vibrating sample magnetometry and four-probe testing. The Fe80–x–y Nb5B14Cu1Co x Ni y alloys exhibit high thermal stability and excellent GFA with T x1 ≥ 735 K and T x1/T m ≥ 0.539. They also show excellent soft magnetic properties with high saturation magnetization of 93– 101 emu g–1 and low coercivity of 0.04 –2.37 Oe. The electrical resistivity of these alloys ranges from 121 μΩ cm to 163 μΩ cm. The newly developed FeNbBCu-CoNi glassy alloys not only possess good GFA and high thermal stability, but also have excellent magnetic properties, high electrical resistivity and low cost. With such promising properties, these alloys have potential for industrial applications.

Download Full-text