Iron-based soft magnetic composites with Mn–Zn ferrite nanoparticles coating obtained by sol–gel method

Wu, Shen; Sun, Aizhi; Xu, Wenhuan; Zhang, Qian; Zhai, Fuqiang; Logan, Philip; Volinsky, Alex A.

doi:10.1016/j.jmmm.2012.06.042

Cited by 100 publications

(30 citation statements)

References 17 publications

(16 reference statements)

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“…Structure and properties of the interphase region among ferromagnetic particle is crucial for physical and mechanical properties of SMC. Researchers have been searching for fine soft magnetic materials with the high saturation magnetization, high permeability and low energy loss, which can be used in a wide frequency range and are especially useful at high frequencies [4][5][6][7]. A good insulation is generally required to minimize eddy current loss in SMC subjected from medium to high frequencies.…”

Section: Introductionmentioning

confidence: 99%

Advances in Powder Metallurgy Soft Magnetic Composite Materials

Búreš¹,

Strečková²,

Fáberová³

et al. 2017

Archives of Metallurgy and Materials

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Powder metallurgy has grown with the expansion of various industry. Automotive industry had the most strong influence. Today, more than 90% of PM products are used in the transportation industry. Development of new materials such as magnetic materials is expected to meet the new trends of automotive industry, electric and hybrid vehicles.Soft magnetic composites (SMC) are PM materials based on ferromagnetic powder particles covered by electric insulation layer. Concept of SMC's and PM technologies offer possibility to become faster, use higher frequencies, become smaller and denser, save more energy, achieving high permeability and lower core loss in high frequency region, which is required for soft magnetic materials. Investigation of correlations among compaction parameters, inner structure, magnetic and mechanical properties are presented.

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Section: Introductionmentioning

confidence: 99%

Advances in Powder Metallurgy Soft Magnetic Composite Materials

Búreš¹,

Strečková²,

Fáberová³

et al. 2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

show abstract

“…Type and amount of insulating layer and other preparation conditions of composites affect on resulting properties of SMC [2][3][4]. Recent studies indicate soft magnetic ferrites as suitable insulating material [5,6].…”

Section: Introductionmentioning

confidence: 99%

The Influence of NiZnFe_2O_4 Content on Magnetic Properties of Supermalloy Type Material

et al. 2017

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Soft magnetic composites represent a remarkable kind of materials with wide variety of use. Magnetic properties are dependent on the materials composition and also on the method of preparation. Ni-Fe-Mo alloys (supermalloy) have high complex permeability and low eddy current losses. Soft magnetic NiZnFe2O4 ferrites have low coercivity and intermediate saturation magnetization. The Ni80Fe14.7Mo4.5Mn0.5Si0.3 (wt%) powder sample was prepared by mechanical alloying of the chemical elements for 24 h. Ni0.3Zn0.7Fe2O4 ferrite is commercially available by Sigma Aldrich. Both powders were mixed at selected ratio and uniaxially compacted at 800 MPa. In this paper, we report the experimental observations of the effects of Ni0.3Zn0.7Fe2O4 content on the electromagnetic properties of NiFeMoMnSi/Ni0.3Zn0.7Fe2O4. The samples contained 5, 10, and 15% of Ni0.3Zn0.7Fe2O4 ferrite and were sintered for 30 min at 800• C. An addition of Ni0.3Zn0.7Fe2O4 ferrite caused decrease of complex permeability and increase coercivity of the samples. The 5% of Ni0.3Zn0.7Fe2O4 sample exhibits the highest value of the real part of complex permeability (48 at 1 kHz). The 10% of Ni0.3Zn0.7Fe2O4 sample showed the lowest total magnetic losses.

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“…The aim of PM technologies is to achieve SMCs with a high enough density and sufficiently stable mechanical properties, whereas an insulating layer between magnetic powder particles should ensure a high electrical resistivity minimizing the overall magnetic losses [4]. In comparison with laminated soft magnetic materials, SMCs prepared by PM methods have unique magnetic properties such as the threedimensional isotropic ferromagnetic behavior, low eddy current loss, as well as relatively lower total core loss at medium and high frequencies [5,6]. The disadvantages of these materials are in a low density and high inhomogeneity, which are responsible for a lower flexural and mechanical strength.…”

Section: Introductionmentioning

confidence: 99%