Fabrication and electromagnetic properties of novel FeNi alloy-coated flake graphite prepared by electroless plating

Liu, Zhili; He, Fang; Gao, Fei; Ren, Baojin; Huang, Yuan

doi:10.1016/j.jallcom.2015.09.202

Cited by 34 publications

(9 citation statements)

References 38 publications

(32 reference statements)

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“…And wave-absorbing performances of alloy powders prepared by the compound method are superior to those of pure nanoscale metal powders. Previous research [11][12][13][14] has shown that FeNi alloy has good so magnetic properties such as high saturation magnetization and Curie temperature, low coercivity value and magnetic anisotropy constant, high magnetic permeability and so on. With an increase of Ni content, the magnetocrystalline anisotropy constant (K 1 ) of FeNi alloys can be reduced, which promotes the microwave absorption peak moving to the required low frequency.…”

Section: Introductionmentioning

confidence: 99%

The influence of different Ni contents on the radar absorbing properties of FeNi nano powders

et al. 2016

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Section: Introductionmentioning

confidence: 99%

The influence of different Ni contents on the radar absorbing properties of FeNi nano powders

et al. 2016

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“…Its shielding effectiveness was estimated in [15] to be as high as 130 dB at a frequency of 1 GHz. In study [16] flake graphite electrolessly plated with a FeNi alloy was tested. The minimal reflection losses were found to amount to about −45 dB for a frequency of ca.…”

Section: Carbon-based Materialsmentioning

confidence: 99%

Methods of Protecting Buildings against HPM Radiation—A Review of Materials Absorbing the Energy of Electromagnetic Waves

et al. 2020

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The pulsed high power microwave (HPM) technology has been developed worldwide for over 20 years. The sources of HPM pulses are a weapon of mass destruction. They pose danger especially to computer and telecommunications equipment and systems, both the military and civilian ones. This paper presents a survey of literature on electromagnetic wave radiation absorbing and shielding materials to be used in construction. Relevant protective measures should include the shielding of buildings or their parts and the absorption of radiation by building envelopes and their elements. The main focus is on the possibilities of improving the shielding and absorptive properties of common construction materials, such as concrete, mortars and synthetic resins. The survey covers the following groups of materials: carbon-based admixtures, nickel powder, iron powders, ferrites, magnetite and polymers. The final part of the survey is devoted to hybrid foam microwave absorbers in which the shape of the material’s inner structure and that of its surface play a special role.

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“…Fabrication of iron-nickel alloyed micro-/nanoparticles has been achieved by various physical and chemical methods such as mechanical alloy [33], chemical reduction in solution [34], chemical vapor deposition [35], physical vapor deposition [36], sol-gel combined with hydrogen reduction [37], sol-gel combustion [38], vacuum evaporation [39], electroless plating [40], chemical reduction based on the polyol process [41], microemulsion method [42], hydrothermal reduction [43], etc. Most of these processes usually require complex precursors and/or surfactants, which increase production costs and introduce impurities, resulting in noticeable declines in the properties of the structures [44].…”

Section: Introductionmentioning

confidence: 99%

Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

et al. 2021

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Iron-nickel alloy is an example of bimetallic nanostructures magnetic alloy, which receives intensive and significant attention in recent years due to its desirable superior ferromagnetic and mechanical characteristics. In this work, a unique starfish-like shape of an iron-nickel alloy with unique magnetic properties was presented using a simple, effective, high purity, and low-cost chemical reduction. There is no report on the synthesis of such novel shape without complex precursors and/or surfactants that increase production costs and introduce impurities, so far. The synthesis of five magnetic iron-nickel alloys with varying iron to nickel molar ratios (10–50% Fe) was undertaken by simultaneously reducing Fe(II) and Ni(II) solution using hydrazine hydrate as a reducing agent in strong alkaline media for 15 min at 95–98 °C. The effect of reaction volume and total metal concentration on the properties of the synthesized alloys was studied. Alloy morphology, chemical composition, crystal structure, thermal stability, and magnetic properties of synthesized iron-nickel alloys were characterized by means of SEM, TEM, EDX, XRD, DSC and VSM. ImageJ software was used to calculate the size of the synthesized alloys. A deviation from Vegard’s law was recorded for iron molar ration higher than 30%., in which superstructure phase of FeNi3 was formed and the presence of defects in it, as well as the dimensional effects of nanocrystals. The saturation magnetization (Ms), coercivity (Hc), retentivity (Mr), and squareness are strongly affected by the molar ratio of iron and nickel and reaction volume as well as the total metal concentration.

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Fabrication and electromagnetic properties of novel FeNi alloy-coated flake graphite prepared by electroless plating

Cited by 34 publications

References 38 publications

The influence of different Ni contents on the radar absorbing properties of FeNi nano powders

The influence of different Ni contents on the radar absorbing properties of FeNi nano powders

Methods of Protecting Buildings against HPM Radiation—A Review of Materials Absorbing the Energy of Electromagnetic Waves

Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

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