Preparation and characterization of flaky FeSiAl composite magnetic powder core coated with MnZn ferrite

Abstract In this paper magnetic organic-inorganic hybrid membranes based on EC, PPO polymer matrices and various magnetic powder microparticles were synthesized and studied. Constant pressure permeation technique and the Time Lag method were used to obtain the gas transport coefficients. The mechanical, rheological and magnetic parameters of magnetic hybrid membranes were examined. It was found that their separation and gas transport properties (D, P, S and α) were improved with the decrease in powder particle size and the increase of membrane’s remanence, saturation magnetization and magnetic particle filling. The increase of the magnetic powder addition and a decrease of its granulation improved also mechanical and rheological parameters of the tested membranes. This improvement also had a positive effect on their gas separation properties and their potential usage in the future.

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Research on Preparation and Properties of Fe-Si-Al Soft Magnetic Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.298.173 ◽

2011 ◽

Vol 298 ◽

pp. 173-178 ◽

Cited By ~ 1

Author(s):

Qing Da Li ◽

X.W. Dong ◽

T.X. Liu ◽

Jun Hua You ◽

Fa Zeng Lian

Keyword(s):

Magnetic Properties ◽

Effective Permeability ◽

Annealing Temperature ◽

Total Loss ◽

Magnetic Powder ◽

Soft Magnetic ◽

Magnetic Composites ◽

Crushing Strength ◽

Soft Magnetic Composites ◽

Magnetic Powder Core

The Fe-Si-Al soft magnetic composites were produced by cold pressing of water-atomized Fe-Si-Al powder using organic binder. The effect of shaping pressure, annealing temperature, magnetic annealing and dielectric content on properties of Fe-Si-Al soft magnetic composites was investigated. The results showed that increasing shaping pressure increases density and radial crushing strength of Fe-Si-Al soft magnetic cores, and decreases coercivity and total loss. Increasing annealing temperature can increase effective permeability and decrease total loss owing to decreasing hysteresis loss, and over-annealing (＞660°C) can deteriorate magnetic properties. The magnetic annealing can decrease total loss of Fe-Si-Al magnetic powder core. Increasing dielectric content can reduce the eddy current loss of Fe-Si-Al magnetic powder core and decrease the real part of permeability. Fe-Si-Al magnetic powder core with shaping pressure of 1800 MPa, annealing temperature of 660 °C and dielelctric content of 0.7% presented the optimum magnetic properties with an effective permeability of 127, a total loss of 78mW/cm3 and a radial crushing strength of 18MPa.

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Correlation between Microstructure and Magnetic Properties on MnZn Ferrite with Bi2O3 Increasing Addition

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.216.23 ◽

2014 ◽

Vol 216 ◽

pp. 23-28

Author(s):

Mihai Branzei ◽

Ionut Cristea ◽

Ion Ciuca ◽

Adrian Bibiș ◽

Marcel Feder

Keyword(s):

Ball Mill ◽

Raw Materials ◽

Steel Ball ◽

Ceramic Technology ◽

Molar Ratio ◽

Quantitative Characterization ◽

Mnzn Ferrite ◽

Sintered Powder ◽

Microstructure And Magnetic Properties

The aim of this paper is quantitative characterization of a MnZn ferrite with Bi2O3increasing addition using the Image-Pro Plus software from Media Cybernetics. The sample matrix is a ferrite with the following chemical composition: Mn0.54Zn0.37Fe2.06O4. We applied the conventional ceramic technology in order to obtain the samples. Thus, the raw materials, i.e. αFe2O3, Mn3O4, and ZnO, in a molar ratio 53:28:19 were mixed in suitable proportions in a steel ball-mill using demineralized water. The mixture was burn off at 800 °C for 1 hour, in air. The pre-sintered powder was milled in steel ball-mill with increasing addition of Bi2O3(0.00, 0.01, 0.03, 0.05, 0.07, 0.10, 0.30, 0.50 wt %). For quick references, the sample without bismuth ions was denoted and the samples with increasing concentrations were numbered from 1, 7.

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Development of Low Iron Loss Soft Magnetic Powder Core

Journal of the Japan Society of Powder and Powder Metallurgy ◽

10.2497/jjspm.63.643 ◽

2016 ◽

Vol 63 (7) ◽

pp. 643-646 ◽

Cited By ~ 1

Author(s):

Hijiri TSURUTA ◽

Tomoyuki UENO ◽

Kouji YAMADA

Keyword(s):

Iron Loss ◽

Magnetic Powder ◽

Soft Magnetic ◽

Magnetic Powder Core

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Characterization of GaAs on MnZn ferrite with a MnAs buffer layer

Journal of Crystal Growth ◽

10.1016/s0022-0248(01)02295-3 ◽

2002 ◽

Vol 237-239 ◽

pp. 1466-1470 ◽

Cited By ~ 3

Author(s):

S. Ito ◽

H. Fujioka ◽

H. Kiwata ◽

T. Ikeda ◽

M. Oshima

Keyword(s):

Buffer Layer ◽

Mnzn Ferrite

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Characterization of heterointerfaces in GaAs/MnAs/MnZn-ferrite structures

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2003.08.070 ◽

2004 ◽

Vol 260 (3-4) ◽

pp. 384-387 ◽

Cited By ~ 2

Author(s):

S. Ito ◽

H. Fujioka ◽

M. Oshima

Keyword(s):

Mnzn Ferrite

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The influence of barium ferrite nanoparticles on morphological and mechanical properties of ethyl cellulose based nanocomposites

Science of Sintering ◽

10.2298/sos1903277s ◽

2019 ◽

Vol 51 (3) ◽

pp. 277-283 ◽

Cited By ~ 1

Author(s):

Aleksandar Stajcic ◽

Ivana Radovic ◽

Vladan Cosovic ◽

Aleksandar Grujic ◽

Jasna Stajic-Trosic ◽

...

Keyword(s):

Thin Films ◽

Mechanical Properties ◽

Ethyl Cellulose ◽

Barium Ferrite ◽

Ferrite Nanoparticles ◽

Solvent Casting ◽

Magnetic Powder ◽

Casting Technique ◽

Nanocomposite Thin Films

This study presents preparation and characterization of ethyl cellulose based nanocomposites. Successful use of simple solvent casting technique provided nanocomposites with high loads of barium ferrite magnetic nanopowder in the polymer matrix, promising significant improvement of mechanical properties. Investigation of morphology revealed formation of agglomerates that are still on nanoscopic level. Nanocomposite thin films with a higher content of the magnetic powder showed substantial enhancement of break strength, elongation and microhardness compared to the pure ethyl cellulose, which was the primary aim of this research.

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Characterization of Kevlar Fiber-Reinforced Absorbing Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.787.311 ◽

2013 ◽

Vol 787 ◽

pp. 311-315

Author(s):

Xi Geng Miao ◽

Zhi Ya Zhao ◽

Xue Long Yang ◽

Lie Liu ◽

Ruo Peng Liu

Keyword(s):

Reflection Loss ◽

Carbon Nanofiber ◽

Resin Composites ◽

Light Weight ◽

High Mechanical Strength ◽

Mnzn Ferrite ◽

Kevlar Fiber ◽

Epoxy Resin Composites ◽

Fiber Fabric

In this paper, addition of Fe-Ni, MnZn-ferrite, and CNF (carbon nanofiber) absorbers in the Kevlar fiber fabric-reinforced epoxy resin composites resulted in excellent absorbing properties as well as other required properties such as light-weight (as low as 2.2 g/cm3), small thickness (~2 mm), high mechanical strength (up to 380 MPa) and thermal stability (up to 120 °C). Reflection loss testing of the laminates FM-3 showed that the peak reflection loss was-45 dB at the frequency of 10.4 GHz, and the absorbing waveband at-10dB was 12 GHz (from 6 to 18GHz). The study also indicated that the content of the added absorbers was limited by the viscosity (or flowability) of the resin-absorber mixed suspensions.

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