Soft Magnetic Metals and Alloys

Boll, R.

doi:10.1002/9783527603978.mst0044

Cited by 5 publications

(5 citation statements)

References 39 publications

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“…Materials within the 1000-10,000 A/m range (approximately 12.57-125.7 Oe) are classified as 'semi-hard', and those exceeding 10,000 A/m (more than 125.7 Oe) are categorized as 'hard'. Based on this classification, all these alloys are categorized as hard magnetic materials [53][54][55][56][57].…”

Section: Resultsmentioning

confidence: 99%

Glass-Forming Ability and Magnetic Properties of Al82Fe16Ce2 and Al82Fe14Mn2Ce2 Alloys Prepared by Mechanical Alloying

Hai,

Viet,

Oanh

2023

Applied Sciences

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Al82Fe16Ce2 and Al82Fe14Mn2Ce2 amorphous alloys were successfully synthesized by the mechanical alloying technique. The microstructural evolution of the milled powders was thoroughly investigated employing X-ray diffraction (XRD) and scanning electron microscopy (SEM). Additionally, their magnetic properties were quantitatively evaluated by a vibrating sample magnetometer (VSM). A full amorphous structure was obtained for both alloys after milling for 40 h. During the initial milling stage, extending from 5 to 20 h, an fcc solid solution phase was formed, coexisting with the residual Al phase. The partial substitution of 2 atomic percent (at.%) Mn for Fe in Al82Fe16Ce2 did not affect the alloy’s glass-forming ability. The amorphous Al82Fe16Ce2 and Al82Fe14Mn2Ce2 powders exhibited a nearly spherical shape, with diameters ranging from 1 to 3 µm and to 10 µm, respectively. Additionally, both the Al82Fe16Ce2 and Al82Fe14Mn2Ce2 alloys demonstrated characteristics of hard magnetism.

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Section: Resultsmentioning

confidence: 99%

Glass-Forming Ability and Magnetic Properties of Al82Fe16Ce2 and Al82Fe14Mn2Ce2 Alloys Prepared by Mechanical Alloying

Hai,

Viet,

Oanh

2023

Applied Sciences

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“…Hence, the coercivity of the samples was measured to make sure that the samples were completely amorphous. It is commonly accepted that soft magnetic BMG have very low values of coercivity57. If the BMG contains some small volume fraction of crystalline inclusions, the coercivity will increase significantly due to domain pinning.…”

Section: Discussionmentioning

confidence: 99%

High pressure die casting of Fe-based metallic glass

Ramasamy

Szabó²,

Borzel³

et al. 2016

Sci Rep

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Soft ferromagnetic Fe-based bulk metallic glass key-shaped specimens with a maximum and minimum width of 25.4 and 5 mm, respectively, were successfully produced using a high pressure die casting (HPDC) method, The influence of die material, alloy temperature and flow rate on the microstructure, thermal stability and soft ferromagnetic properties has been studied. The results suggest that a steel die in which the molten metal flows at low rate and high temperature can be used to produce completely glassy samples. This can be attributed to the laminar filling of the mold and to a lower heat transfer coefficient, which avoids the skin effect in the steel mold. In addition, magnetic measurements reveal that the amorphous structure of the material is maintained throughout the key-shaped samples. Although it is difficult to control the flow and cooling rate of the molten metal in the corners of the key due to different cross sections, this can be overcome by proper tool geometry. The present results confirm that HPDC is a suitable method for the casting of Fe-based bulk glassy alloys even with complex geometries for a broad range of applications.

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“…The nickel-iron based alloys, also known as permalloys or supermalloys, are one of the most wellestablished high permeability soft magnetic materials [1,2]. The magnetic properties of these alloys are controlled by the chemical composition, mechanical working and the final heat treatment, called magnetic-annealing.…”

Section: Introductionmentioning

confidence: 99%

Sintered Fe50Ni Alloy Produced by Mixing Iron and Nickel Powders

Rodrigues

Concílio

Filho³

et al. 2014

MSF

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Fe50Ni alloys are used when very high magnetic permeabilities are necessary. Parts of these alloys can be produce by different mechanical processes. Metallurgical processes as investment casting and powder metallurgy can also be used. Sintered Fe50Ni parts have two disadvantages, in terms of magnetic properties: the presence of porosity and the limited grain size. This paper investigates the effects of compactation pressure on the final microstructure and density. Mixtures of atomized iron and carbonyl nickel powder were uniaxially pressed. Cylindrical samples with around 6.5g/cm3 of green density were vacuum sintered at 1220 °C. After sintering samples were cold deformed and then heat treated.

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Soft Magnetic Metals and Alloys

Cited by 5 publications

References 39 publications

Glass-Forming Ability and Magnetic Properties of Al82Fe16Ce2 and Al82Fe14Mn2Ce2 Alloys Prepared by Mechanical Alloying

Glass-Forming Ability and Magnetic Properties of Al82Fe16Ce2 and Al82Fe14Mn2Ce2 Alloys Prepared by Mechanical Alloying

High pressure die casting of Fe-based metallic glass

Sintered Fe50Ni Alloy Produced by Mixing Iron and Nickel Powders

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