Highly enhancing electromagnetic properties in Fe …
Fe-Si/MnO-SiO 2 soft magnetic composites (SMCs) are prepared by sintering ball milled Fe-Si/MnO 2 core–shell structured composites. The correlation between the coating uniformity and electromagnetic properties have been investigated via adjusting ball milling parameters in detail.
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Research progress on synthesis mechanism and performance …
Shan et al. achieved biochar/activated carbon-Fe 3 O 4 composite through ball milling to avoid the formation of Fe 2 O 3 which yields materials ... J. et al. Magnetic ball-milled FeS@biochar as ...
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A novel Fe-PTFE magnetic composite prepared by ball …
A novel Fe-PTFE magnetic composite prepared by ball milling for the efficient degradation of imidacloprid: Insights into interaction mechanisms based on ultrasonic …
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Fundamental study on the mechanical strength of soft magnetic composite
Soft magnetic composites (SMC) are consolidated ferromagnetic powders surrounded by an electrically insulating film that is manufactured through a process similar to powder metallurgy [1]. ... study on the mechanical strength of soft magnetic composite prepared by ultra-high aspect ratio flake iron powder using ball-milling process. Koki Ohba a ...
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Recent Advances in Multi-Functional Coatings for Soft Magnetic Composites
The maximum magnetic permeability of 855 was measured by Marinca et al., producing a Fe/Fe 2 O 3 composite powder through ball milling and reactive sintering (1100 °C). Slightly lower results are obtained in Yan et al. [ 80 ] through a similar technique using Fe-Si ferromagnetic powders.
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Communication—Magnetic Properties of Fe/Na2SiO3/Fe3O4 Soft Magnetic
In this work, an iron-based soft magnetic composite coated with a composite layer of sodium silicate and nano ferroferric oxide was prepared by two-step ball milling. The presence of sodium silicate reduces the eddy current loss which increases the resistivity and makes the distribution of Fe 3 O 4 on the surface more uniform.
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Preparation of ultrafine Sm2Fe17N3 magnetic powders without ball milling
Ultrafine Sm 2 Fe 17 N 3 powders obtained via ball or airflow milling usually exhibit defects and localized demagnetization owing to their irregular morphologies. Therefore, this study employs the ultrasonic spray pyrolysis–reduction diffusion method in conjunction with CaO coating to control the precursor size of the oxides and obtain a size-controllable nearly spherical …
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Magnetic and electromagnetic properties of Fe3O4/Fe composites …
Fe 3 O 4 /Fe flaky composites were prepared by a simple one-step ball-milling process.. The magnetization of Fe 3 O 4 /Fe composites has been improved compared with raw Fe 3 O 4.. The optimal RL value of Fe 3 O 4 /Fe composites can reach −25.9 dB at 16.1 GHz under 1.25 mm.
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Magnetic properties of ball-milled SrFe12O19 particles
The room-temperature magnetic properties of ball-milled strontium hexaferrite particles consolidated by spark-plasma sintering are strongly influenced by the milling time. Scanning electron ...
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The effect of milling time on the preparation of an …
This study uses ball milling at various milling times to create an aluminum matrix composite (AMC) reinforced with magnetite nanoparticles. The milling time was optimized to create an AMC with favorable mechanical and magnetic properties, and its effect on magnetism, microstructure, and hardness was studied.
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Journal of Magnetism and Magnetic Materials
In ball-milled iron particles for soft magnetic composites (SMCs), milling aids with lubricity can induce a (0 0 1) fiber texture with superior magnetic properties.Effects of lubricants on the recrystallization behavior of ball-milled iron particles with fiber texture and their magnetic properties of SMCs using the iron particles were investigated.
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Ball milling as a mechanochemical technology for …
Another Fe-biochar composite was synthesized via ball milling and achieved 97.8% removal of Cr(VI) in acidic conditions ... the magnetic ball-milled biochar showed an excellent performance in the dye adsorption with increased aromatic C = C bonds and enhanced π-π and electrostatic interactions.
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A novel Fe-PTFE magnetic composite prepared by ball milling …
In this study, a novel magnetic poly (tetrafluoroethylene, PTFE) (Fe@PTFE) piezoelectric catalytic material was successfully prepared by a simple ball milling treatment. The prepared piezoelectric catalytic material Fe@PTFE exhibited excellent catalytic performance under the activation of ultrasonic …
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Al2O3-10 wt% Fe composite prepared by high energy ball milling
In the present work, Al 2 O 3-10 wt% Fe composite powders were manufactured by mechanical alloy using different milling times.The morphology, structure and magnetic properties were carefully investigated and explained through the results of SEM, XRD (with Rietveld refinement), Möss spectroscopy and magnetic measurements at low-temperatures.
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Properties of Fe2SiO4/SiO2 coated Fe-Si soft magnetic composites
In this work, Fe 2 SiO 4 /SiO 2 coated Fe-Si soft magnetic composites (SMCs) have been prepared successfully via ball milling Fe-6.5wt%Si/Fe 3 O 4 composite particles combined with subsequent spark plasma sintering (SPS) process. The formation mechanism of Fe 2 SiO 4 /SiO 2 insulating layer and effect of Fe 3 O 4 coating content on the microstructure …
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Separable and reactivated magnetic mZVAl/nFe3O4 …
Then grinding jars are placed symmetrically in the planetary ball mill, and the mZVAl/nFe 3 O 4 composite is prepared at different BM speeds and BM time settings without …
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A novel Fe-PTFE magnetic composite prepared by ball milling …
In this study, a novel magnetic poly (tetrafluoroethylene, PTFE) (Fe@PTFE) piezoelectric catalytic material was successfully prepared by a simple ball milling treatment. The prepared piezoelectric catalytic material Fe@PTFE exhibited excellent catalytic performance under the activation of ultrasonic (US) and realized the efficient degradation of imidacloprid …
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Research progress on synthesis mechanism and performance …
Similarly, another magnetic biochar-FeS composite fabricated via ball milling employed biochar as an electron transport medium and utilized surf-bonded Fe(II) and S(II) to …
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Ball milling biochar iron oxide composites for the removal …
Previous studies have demonstrated that magnetic biochar/iron oxide composites not only have good Cr(VI) adsorption ability but also can be magnetically separated from water after use ... in their XRD patterns suggest that ball milling can also affect the physicochemical properties of iron oxides in the composites. After ball milling ...
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Microstructure and magnetic properties of MnO2 coated …
In this paper, Fe soft magnetic composites (SMCs) coated with MnO 2 were prepared successfully by ball milling and following spark plasma sintering. The effect of MnO 2 content on microstructure and magnetic properties for the Fe/MnO 2 SMCs was investigated in detail. The analysis results show that a uniform MnO 2 coating layer can be formed on the …
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Influence of ball milling parameters on microstructure and magnetic …
Another work analyze the ball milling effect and the microstructure on a composite alloy of Eurofer97 steel reinforced 3 wt.% of NbC. Likewise, it was tested the effect of high energy ball milling on the morphology, microstructure, and properties of TiC particle-reinforced 6005A aluminum alloy matrix composite with 1.5, 3, and 6 wt.% .
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Insights on ball milling enhanced iron magnesium layered …
Insights on ball milling enhanced iron magnesium layered double oxides bagasse biochar composite for ciprofloxacin adsorptive removal from water ... removal by a novel ball milled FeO-biochar composite: Role of biochar electron transfer capacity under high pyrolysis temperature. Chemosphere ... Although magnetic modification has potential for ...
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Effect of milling time on dynamic permeability values of …
Planar anisotropy carbonyl iron (PACI) particles were prepared from commercial spherical carbonyl iron particles through a high performance ball-milling technique. The paraffin composites with orientation of shape anisotropy field for these PACI particles were obtained by applying an external magnetic field during the fabrication process.
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Exploring the Impact of Different Milling Parameters of …
This research focuses on the production process of soft magnetic composites in the form of 3D bulk compacts made from insulated powder particles using different milling parameters, aiming to enhance their magnetic properties and to study an innovative method of the powder surface "smoothing" technique. A structure analysis using scanning electron …
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Exploring the Impact of Different Milling Parameters of Fe/SiO
The reduced number of milling balls likely resulted in less internal structural damage compared to samples prepared with higher BPR values. It can also be noticed that …
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Magnetically enhanced hard–soft SmCo5–FeNi composites obtained …
The effect of high energy ball milling on the structure and magnetic properties of SmCo 5 –x%FeNi (x: 5,15), magnetically hard–soft phase composites, has been investigated as a function of composition ratio, ball milling time, and annealing temperature using x-ray diffraction and room temperature magnetometry.The milling resulted in decomposition of …
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Modulating dielectric properties of polyimide composite …
Solid-state 13 C and 29 Si nuclear magnetic resonance (NMR) experiments were conducted on a 400 MHz NMR spectrometer. The 13 C NMR spectra were acquired at 100.63 MHz, with ... After undergoing the ball-milling process using 5 mm zirconium beads, the BMS1 sample displayed a higher CA of 120.7°, indicating an enhancement in its hydrophobicity ...
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Effect of ball-milling time on mechanical and magnetic …
milling. Tensile tests demonstrated that, as the ball-milling time increased, the yield strength increased in the composites; a maximum 50 % relative increase in tensile strength due to the addition of CNTs was achieved after 1 h ball-milling, which then decreased with further ball-milling. The elongation to fracture was significantly increased ...
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Formation mechanism and magnetic performance of Fe-Si soft magnetic
Fe-Si soft magnetic composites (SMCs) coated with MnO-SiO 2 composite coatings were fabricated via sintering the ball milled Fe-Si/MnO 2 composite powders. The transformation mechanism from MnO 2 coating to MnO-SiO 2 composite coatings was studied. The effect of MnO 2 content on the microstructure and magnetic properties of Fe-Si soft …
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Effect of ball-milling time on mechanical and magnetic …
Carbon nanotubes (CNTs) reinforced FeCo alloys were produced by high energy ball-milling and spark plasma sintering (SPS). CNTs distribution in the FeCo alloy was gradually improved as ball-milling time increased, with a uniform dispersion achieved after 6 h ball-milling. Tensile tests demonstrated that, as the ball-milling time increased, the yield strength …
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