The Experts below are selected from a list of 4512 Experts worldwide ranked by ideXlab platform
Bang Zhou - One of the best experts on this subject based on the ideXlab platform.
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enhanced soft magnetic properties of the fe based amorphous powder cores with novel tio2 Insulation Coating layer
Journal of Magnetism and Magnetic Materials, 2019Co-Authors: Bang Zhou, Yaqiang Dong, Liang Chang, Fengqin Bi, Xinmin WangAbstract:Abstract The core-shell structured FeSiBCCr@TiO2 amorphous magnetic powder cores (AMPCs) with excellent comprehensive magnetic properties were successfully prepared using spherical amorphous powders with high quality insulating layer. Scanning electron microscopy, Energy dispersive X-ray spectroscopy analysis, X-ray diffraction, and Fourier transform infrared spectroscopy revealed that the surface of the Fe-based amorphous powders was covered by a continuous amorphous TiO2 Insulation layer. The performances of the AMPCs can be well tuned by changing the thickness of the Insulation Coating layer, which can be adjusted by controlling the concentration of tetrabutyl titanate (TBOT) in the hydrolysis and condensation reaction system. After annealing at 480 °C for 1 h, the AMPCs with TBOT concentrations of 0.15 ml/g exhibited excellent comprehensive soft magnetic properties, including the highest quality factor of 104.5 at 560 kHz and lowest core loss of 265 mW/cm3 at f = 100 kHz and Bm = 0.05 T. It also maintained a relatively high permeability of 67 up to 5 MHz and superior DC-bias permeability of 68% at a bias field of 100 Oe. This study demonstrated a modified method to develop a novel Insulation Coating layer to reduce the core loss and improve the magnetic properties of AMPCs.
Xinmin Wang - One of the best experts on this subject based on the ideXlab platform.
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enhanced soft magnetic properties of the fe based amorphous powder cores with novel tio2 Insulation Coating layer
Journal of Magnetism and Magnetic Materials, 2019Co-Authors: Bang Zhou, Yaqiang Dong, Liang Chang, Fengqin Bi, Xinmin WangAbstract:Abstract The core-shell structured FeSiBCCr@TiO2 amorphous magnetic powder cores (AMPCs) with excellent comprehensive magnetic properties were successfully prepared using spherical amorphous powders with high quality insulating layer. Scanning electron microscopy, Energy dispersive X-ray spectroscopy analysis, X-ray diffraction, and Fourier transform infrared spectroscopy revealed that the surface of the Fe-based amorphous powders was covered by a continuous amorphous TiO2 Insulation layer. The performances of the AMPCs can be well tuned by changing the thickness of the Insulation Coating layer, which can be adjusted by controlling the concentration of tetrabutyl titanate (TBOT) in the hydrolysis and condensation reaction system. After annealing at 480 °C for 1 h, the AMPCs with TBOT concentrations of 0.15 ml/g exhibited excellent comprehensive soft magnetic properties, including the highest quality factor of 104.5 at 560 kHz and lowest core loss of 265 mW/cm3 at f = 100 kHz and Bm = 0.05 T. It also maintained a relatively high permeability of 67 up to 5 MHz and superior DC-bias permeability of 68% at a bias field of 100 Oe. This study demonstrated a modified method to develop a novel Insulation Coating layer to reduce the core loss and improve the magnetic properties of AMPCs.
Xinxin Wang - One of the best experts on this subject based on the ideXlab platform.
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effect of thickness of Insulation Coating on temperature of electrically exploded tungsten wires in vacuum
Physics of Plasmas, 2017Co-Authors: Huantong Shi, Xiaobing Zou, Xinxin WangAbstract:This paper reports an interesting observation of great differences in the temperature of exploded wires with Insulation Coating of different thicknesses. Two kinds of polyimide-coated tungsten wires were used with the same conductive diameter 12.5 μm but a different thickness of Coating, 0.75–2.25 μm and 2.25–4.25 μm, respectively. The specific energy reconstructed from the current and voltage signals was quite close for the tested wires. However, the exploding scenario, obtained from Mach-Zehnder interferograms, showed great differences: a neutral outer-layer was observed around the thick-coated wire, which was absent for the thin-coated wire; and the calculated electron density and local thermal equilibrium temperature were much higher for thick-coated wires. The heat-preserving neutral layer formed by the decomposition of the Insulation was supposed to be the cause of this phenomenon.
K Janghorban - One of the best experts on this subject based on the ideXlab platform.
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properties of iron based soft magnetic composite with iron phosphate silane Insulation Coating
Journal of Alloys and Compounds, 2009Co-Authors: Amir Hossein Taghvaei, H Shokrollahi, K JanghorbanAbstract:This paper investigates the magnetic and structural properties of iron phosphate-aminosilane soft magnetic composites. FTIR spectra, EDX analysis and distribution maps show that the particle surface layer contains a thin layer of iron-phosphate with high coverage of powder surface. The phosphate layer decreases the loss factor and the imaginary part of permeability, as well as increasing the electrical resistivity and the operating frequencies. This layer, which lowers the electrical resistivity and the loss factor, is decomposed by the annealing treatment. The double-layer insulator increases the electrical resistivity and the operating frequency. The siloxane with high thermal stability does not decompose during the annealing treatment. This type of siloxane increases saturation magnetization, electrical resistivity and permeability but decreases microstrain and coercivity.
Huantong Shi - One of the best experts on this subject based on the ideXlab platform.
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effect of thickness of Insulation Coating on temperature of electrically exploded tungsten wires in vacuum
Physics of Plasmas, 2017Co-Authors: Huantong Shi, Xiaobing Zou, Xinxin WangAbstract:This paper reports an interesting observation of great differences in the temperature of exploded wires with Insulation Coating of different thicknesses. Two kinds of polyimide-coated tungsten wires were used with the same conductive diameter 12.5 μm but a different thickness of Coating, 0.75–2.25 μm and 2.25–4.25 μm, respectively. The specific energy reconstructed from the current and voltage signals was quite close for the tested wires. However, the exploding scenario, obtained from Mach-Zehnder interferograms, showed great differences: a neutral outer-layer was observed around the thick-coated wire, which was absent for the thin-coated wire; and the calculated electron density and local thermal equilibrium temperature were much higher for thick-coated wires. The heat-preserving neutral layer formed by the decomposition of the Insulation was supposed to be the cause of this phenomenon.