Influence of Lamellar Graphite Additions on the Electro-Magnetic Properties of Carbonyl Iron

2014 ◽  
Vol 915-916 ◽  
pp. 690-693
Author(s):  
Zhen Jian Lv ◽  
Zhao Yang Zeng ◽  
Xing Wei Ji ◽  
Ming Lu
Keyword(s):  
Magnetic Properties ◽  
Carbonyl Iron ◽  
Mass Ratio ◽  
Iron Powders ◽  
Magnetic Parameters ◽  
Lamellar Graphite ◽  
Electro Magnetic

For the purpose of investigating the influence of graphite addition on the property of carbonyl iron absorber, some samples were made by mixing graphite and carbonyl iron powders. The electro-magnetic parameters were then measured and compared between samples containing different graphite mass ratio. Microstructures of these samples were observed to make sure that additions were uniformly distributed in these samples. By this way, the influence of graphite addition was systematically analyzed.

Describing Method for Information Protecting Composite Materials

2011 ◽  
Vol 271-273 ◽  
pp. 1070-1073
Author(s):  
Heng Liu ◽  
Zhao Yang Zeng ◽  
Chao Wu
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Transmission Line ◽  
Carbonyl Iron ◽  
Effective Medium Approximation ◽  
Transmission Line Model ◽  
Magnetic Parameters ◽  
Material Good ◽  
Electro Magnetic ◽  
Good Agreement

For the purpose of discussing the potentiality of composite materials in information protecting, the microwave transmitting properties of epoxy-based carbonyl iron composite material was systematically analyzed in this report. The effective medium approximation (EMA) model was used to calculate the electro-magnetic parameters of the material, while the transmission line model was used to calculate the absorption ability of the composite material. Good agreement between calculation and experiments was obtained, which means the rationality of the describing method in this paper.

scholarly journals Enhanced magnetic properties of Fe-based nanocrystalline composites by addition of carbonyl iron powders

2019 ◽  
Vol 1 (8) ◽  
Author(s):  
Liang Chang ◽  
Yiqun Zhang ◽  
Yaqiang Dong ◽  
Qiang Li ◽  
Aina He ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Carbonyl Iron ◽  
Iron Powders ◽  
Nanocrystalline Composites

Synthesis of nickel selenites, their solubility and bonding in them

1982 ◽  
Vol 47 (8) ◽  
pp. 2069-2076 ◽  
Author(s):  
Miroslav Ebert ◽  
Zdeněk Mička ◽  
Ilona Peková
Keyword(s):  
Magnetic Properties ◽  
Hydrogen Bonding ◽  
Solubility Diagram ◽  
Reflectance Spectroscopy ◽  
Chloride Anion ◽  
Fluoride Anion ◽  
Infrared Absorption Spectroscopy ◽  
Magnetic Parameters ◽  
Nickel Cation ◽  
Spectrochemical Series

The solubility diagram of the NiSeO3-SeO2-H2O system at 25 °C was studied, and on its basis, Ni(HSeO3)2.2 H2O was prepared. This selenite and NiSeO3.2 H2O were investigated by infrared absorption spectroscopy and by electronic reflectance spectroscopy and their magnetic properties were determined. Based on the infrared spectra, the force constants of the selenium-oxygen bonds were determined and the hydrogen bonding was characterized. The electronic reflectance spectra and the magnetic parameters indicate an octahedral arrangement of the coordination sphere of the nickel cation and characterize the selenite anion as a ligand that in the spectrochemical series assumes a position between the fluoride anion and water and in the nephelauxetic series, between ethylenediamine and the chloride anion.

Magnetic properties of some iron powders and ore concentrates

1974 ◽  
Vol 13 (6) ◽  
pp. 443-446
Author(s):  
G. D. Degtyareva ◽  
V. L. Shvartsman
Keyword(s):  
Magnetic Properties ◽  
Iron Powders

Annealing effects on magnetic properties and strength of organic-silicon epoxy resin-coated soft magnetic composites

2013 ◽  
Vol 228 (12) ◽  
pp. 2049-2058 ◽  
Author(s):  
Ling Xiao ◽  
Yanhua Sun ◽  
Chunhua Ding ◽  
Lihua Yang ◽  
Lie Yu
Keyword(s):  
Magnetic Properties ◽  
Epoxy Resin ◽  
Strength Analysis ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Coating Materials ◽  
Maximum Heat ◽  
Iron Powders ◽  
Organic Silicon ◽  
Soft Magnetic Composites

Soft magnetic composites (SMCs) can be described as soft magnetic powders covered by electrically insulating layers. In this work, iron powders with high purity and organic-silicon epoxy resin were chosen for good magnetic properties, thermal stability, and mechanical properties, respectively. The effect of amount of resin, different annealing temperatures on the microstructure, and performance of SMCs was investigated. Results show that organic-silicon epoxy resin has excellent properties as dielectric coating materials for coating iron powders and maximum heat-resistant temperature is about 400 ℃. According to magnetic properties and flexural strength analysis, the optimum annealing temperature of organic-silicon epoxy resin-coated composite is 200 ℃. Furthermore, the finite element analysis indicates that the strength of the whole composites is related to the adhesion of resin and iron and the strength of resin itself.

Synthesis and Electro-magnetic Properties of Polyaniline-barium Ferrite Nanocomposite

2007 ◽  
Vol 20 (6) ◽  
pp. 739-742 ◽  
Author(s):  
Yuan-xun Li ◽  
Huai-wu Zhang ◽  
Ying-li Liu ◽  
John Q. Xiao
Keyword(s):  
Magnetic Properties ◽  
Barium Ferrite ◽  
Electro Magnetic

scholarly journals Inductive Thermal Effect of Ferrite Magnetic Nanoparticles

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3208 ◽  
Author(s):  
Jeotikanta Mohapatra ◽  
Meiying Xing ◽  
J. Ping Liu
Keyword(s):  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Spinel Ferrite ◽  
Particle Interactions ◽  
Heat Induction ◽  
Heating Efficiency ◽  
Magnetic Parameters ◽  
Thermally Activated ◽  
Cell Functions ◽  
Magnetic Heating

Localized heat induction using magnetic nanoparticles under an alternating magnetic field is an emerging technology applied in areas including, cancer treatment, thermally activated drug release and remote activation of cell functions. To enhance the induction heating efficiency of magnetic nanoparticles, the intrinsic and extrinsic magnetic parameters influencing the heating efficiency of magnetic nanoparticles should be effectively engineered. This review covers the recent progress in the optimization of magnetic properties of spinel ferrite nanoparticles for efficient heat induction. The key materials factors for efficient magnetic heating including size, shape, composition, inter/intra particle interactions are systematically discussed, from the growth mechanism, process control to chemical and magnetic properties manipulation.

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