4.6 Article

Effect of Various Metal Oxide Insulating Layers on the Magnetic Properties of Fe-Si-Cr Systems

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Materials Science, Ceramics

Effects of air annealing treatments on the microstructure, components, and mechanical properties of magnetron sputtered Al2O3-Cr2O3-ZrO2 composite coatings

Yi Xue et al.

Summary: This study investigates the effects of air annealing on the microstructure, components, and mechanical properties of ceramic composite coatings. The results show that annealing below 600 degrees C does not visibly alter the phase-structure and superficial characteristics of the coatings, while the mechanical properties improve due to the growth of oxide grains. Annealing at 750 degrees C leads to the formation of uniform and refined nanoparticles on the coating surface, which effectively enhances the mechanical properties. Annealing at 850 degrees C, however, causes the enlargement of precipitated nanoparticles and the generation of micro-defects, resulting in a drastic morphological evolution, an increase in surface roughness, and a significant decrease in mechanical properties.

CERAMICS INTERNATIONAL (2023)

Article Engineering, Electrical & Electronic

Preparation and magnetic performance optimization of FeSiAl/Al2O3-MnO-Al2O3 soft magnetic composites with particle size adjustment

Zigui Luo et al.

Summary: By regulating the average particle size of FeSiAl powders, the electromagnetic performance of FeSiAl soft magnetic composites can be optimized. A decrease in the average thickness of the MnO2 coating and the relative density of the composites leads to weakened permeability, deteriorated coercivity, increased hysteresis loss, and slightly enhanced saturation magnetization. Smaller particle sizes result in increased resistivity and a reduction in both inter-particle and intra-particle eddy current losses.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2022)

Article Chemistry, Physical

In situ construction of Fe3Al@Al2O3 core-shell particles with excellent electromagnetic absorption

Xixi Luo et al.

Summary: Fe3Al@Al2O3 core-shell absorbents were obtained through thermal treatment of Fe3Al powder with the trace amount of oxygen. The absorbents exhibited excellent microwave absorption properties when oxidized at 800 degrees Celsius, with wide bandwidth and high impedance matching ratio.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

Article Engineering, Mechanical

Study of the nano-network structure in the friction transfer film of the hybrid reinforced aluminum-based composite

K. L. Zheng et al.

Summary: The study investigates the formation of an iron-poor friction transfer film in hybrid reinforced aluminum-based composites, resulting in high friction coefficient and low wear rate. The composition of the friction transfer film was analyzed using various techniques, revealing the presence of nanosized aluminum, ultra-fine aluminum, and crushed silicate particles interwoven in a nano-network structure.
Article Materials Science, Ceramics

Influence of sintering temperature on heterogeneous-interface structural evolution and magnetic properties of Fe-Si soft magnetic powder cores

Rui Wang et al.

Summary: This study investigates the evolution of the core-shell structure and heterogeneous interface in Fe-Si/SiO2 SMPCs and their influence on SMPCs performance. The results show that an appropriate sintering temperature is crucial for maintaining the integrity and uniformity of the core-shell heterostructure, resulting in high resistivity and low total loss.

CERAMICS INTERNATIONAL (2022)

Article Materials Science, Multidisciplinary

Over 100 MHz cut-off frequency mechanism of Fe-Si soft magnetic composites

Xiaowei Jin et al.

Summary: This study investigates soft magnetic composites made of spherical Fe-5wt%Si particles insulated by epoxy resin. By changing the particle size, the cutoff frequency can be increased. The mechanism of cutoff frequency and permeability is discussed by applying a DC field to remove the displacement of domain wall and reversal magnetization of the domain. The cutoff frequency and permeability in the MHz range are found to be influenced by the natural resonance modulated by eddy current. Weakening the effect of eddy current in the magnetic particle is an effective way to increase the cutoff frequency of soft magnetic composites.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2022)

Article Chemistry, Multidisciplinary

Effects of axial pressure on the evolution of core-shell heterogeneous structures and magnetic properties of Fe-Si soft magnetic powder cores during hot-press sintering

Yue Qiu et al.

Summary: This study investigated the influence of axial pressure on the evolution of core-shell structures and heterogeneous interfaces of Fe-Si@SiO2 soft magnetic powder cores (SMPCs), as well as the effect of such evolution on the performance of SMPCs. The results showed that the intact core-shell heterostructure exhibited high magnetic properties, while the destroyed heterostructure resulted in decreased performance.

RSC ADVANCES (2022)

Article Materials Science, Multidisciplinary

Insulation layer design for soft magnetic composites by synthetically comparing their magnetic properties and coating process parameters

Jinghui Wang et al.

Summary: The study compared the soft magnetic performance of Fe-6.5 wt.%Si soft magnetic composites insulated with different materials, analyzing the sources of core loss using a loss separation fitting model. SMCs insulated with inorganic or/and magnetic ferrite materials showed lower eddy current losses and better performance, making them suitable for industrial applications.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

Article Engineering, Chemical

Highly enhancing electromagnetic properties in Fe-Si/MnO-SiO2 soft magnetic composites by improving coating uniformity

Zigui Luo et al.

Summary: Fe-Si/MnO-SiO2 soft magnetic composites (SMCs) were successfully prepared by sintering ball milled Fe-Si/MnO2 core-shell structured composites, with improved coating uniformity and electromagnetic properties achieved by adjusting ball milling parameters. The optimized composite materials exhibit high insulation, low core loss, and good frequency stability.

ADVANCED POWDER TECHNOLOGY (2021)

Article Engineering, Electrical & Electronic

Novel Fabrication Method for a High-Performance Soft-Magnetic Composite Composed of Alumina-Coated Fe-Based Metal Powder

Sungjoon Choi et al.

Summary: A high-performance soft-magnetic composite (SMC) was successfully fabricated without the application of compaction pressure by mixing three different alumina-coated Fe-based metal powders and molding in a toroidal mold. The optimal magnetic properties were achieved through surface coating control and an effective mixture of metal powders.

JOURNAL OF ELECTRONIC MATERIALS (2021)

Article Materials Science, Multidisciplinary

Magnetic properties of FeSiCr@MgO soft magnetic composites prepared by magnesium acetate pyrolysis for high-frequency applications

Boru Dong et al.

Summary: In this study, FeSiCr soft magnetic composites with magnesium oxide insulating layer were prepared by the evaporation and thermal decomposition of magnesium acetate tetrahydrate. The thickness of the insulating layer affects the magnetic properties of the core, leading to improved frequency stability and DC bias performance. Thermal decomposition plays a role in annealing the composite powder and reducing the coercivity of the magnetic core.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

Review Chemistry, Physical

Review on soft magnetic metal and inorganic oxide nanocomposites for power applications

A. Talaat et al.

Summary: Oxide-based nanocomposites have the potential for higher switching frequencies, but scalable synthesis techniques are limited; this review identifies opportunities for developing high-performance nanocomposite systems through microstructure engineering; it focuses on optimizing soft magnetic properties and powder metallurgy techniques.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Materials Science, Multidisciplinary

Enhanced magnetic and mechanical properties of gas atomized Fe-Si-Al soft magnetic composites through adhesive insulation

Xiaoyan Shi et al.

Summary: This study developed adhesive composite insulating coatings containing epoxy resin, MgO, and aluminum dihydrogen phosphate to enhance the magnetic and mechanical properties of Fe-Si-Al soft magnetic composites (SMCs). The influences of MgO content, particle size, and water content on the properties were comprehensively investigated. Optimized experimental parameters led to improved green strength and product strength, as well as optimized permeability, core loss, and DC-bias performance by adjusting insulation layers.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

Article Engineering, Electrical & Electronic

Improved magnetic properties of iron-based soft magnetic composites with a double phosphate-SiO2 shells structure

Wanli Yuan et al.

Summary: This study introduces a double shells structure for iron-based soft magnetic composites, which enhances the magnetic properties and high-temperature resistance of the material, resulting in lower core loss.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2021)

Article Chemistry, Physical

Improved ball milling method for the synthesis of nanocrystalline TiFe compound ready to absorb hydrogen

L. E. R. Vega et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Article Engineering, Environmental

Visible photocatalysis of Cr(VI) at g/L level in Si/N-TiO2 nanocrystals synthesized by one-step co-hydrolysis method

Cheng-Zhao Jin et al.

CHEMICAL ENGINEERING JOURNAL (2020)

Proceedings Paper Electrochemistry

Preparation of soft magnetic composite from Fe-6.9wt%Si by different heat treatment strategies.

Bence Kocsis et al.

12TH HUNGARIAN CONFERENCE ON MATERIALS SCIENCE (HMSC12) (2020)

Article Materials Science, Multidisciplinary

Microstructure and magnetic properties of MnO2 coated iron soft magnetic composites prepared by ball milling

Yanglin Zhang et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2020)

Article Materials Science, Multidisciplinary

Enhanced soft magnetic properties of the Fe-based amorphous powder cores with novel TiO2 insulation coating layer

Bang Zhou et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2019)

Article Materials Science, Multidisciplinary

Low-loss and high-induction Fe-based soft magnetic composites coated with magnetic insulating layers

Bingyang Meng et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2019)

Article Materials Science, Multidisciplinary

Phosphoric acid addition effect on the microstructure and magnetic properties of iron-based soft magnetic composites

Hsing-I Hsiang et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2018)

Article Engineering, Chemical

Structure and magnetic properties of ZrO2-coated Fe powders and Fe/ZrO2 soft magnetic composites

Kaijie Geng et al.

ADVANCED POWDER TECHNOLOGY (2017)

Article Instruments & Instrumentation

Kinetics of F center annealing and colloid formation in Al2O3

E. A. Kotomin et al.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS (2016)

Article Materials Science, Multidisciplinary

Influence of TiO2 content on the mechanical and tribological properties of Cr2O3-based coating

Nan-nan Li et al.

MATERIALS & DESIGN (2015)

Article Materials Science, Multidisciplinary

Preparation and characterization of a polyimide coating on the surface of carbon fibers

Yuan Hao-jie et al.

NEW CARBON MATERIALS (2015)

Article Materials Science, Multidisciplinary

Annealing effects on magnetic properties of silicone-coated iron-based soft magnetic composites

Shen Wu et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2012)

Article Chemistry, Physical

In situ nanocrystalline Fe-Si coating by mechanical alloying

G. Gupta et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2009)

Article Optics

Synthesis and luminescence characteristics of Eu3+-doped ZrO2 nanoparticles

Byung Kee Moon et al.

JOURNAL OF LUMINESCENCE (2007)

Article Nuclear Science & Technology

Electrical conductivity in magnesium-doped Al2O3 crystals at moderate temperatures

M Tardio et al.

RADIATION EFFECTS AND DEFECTS IN SOLIDS (2001)