Enhanced microwave absorbing properties and heat resistance of carbonyl iron by electroless plating Co

Zhu, Dongmei; Zhou, Wancheng; Luo, Fa

doi:10.1016/j.jmmm.2015.05.090

Cited by 31 publications

(8 citation statements)

References 17 publications

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“…As shown in Figure 1a,b, the particle size of CIPs is about 1 µm, and there are some bumps on the surface of the CIPs particle at about 50 nm. Figure 1c shows that the saturation magnetization (Ms) and coercive force (Hc) of CIPs are 152 emu/g and 30 Oe, respectively, which makes CIPs obtain relatively high magnetic loss of electromagnetic waves [15,16]. The SEM and TEM pictures of CNTs using in this paper are shown in Figure 1d,e.…”

Section: Resultsmentioning

confidence: 82%

Enhanced Shielding Performance of Layered Carbon Fiber Composites Filled with Carbonyl Iron and Carbon Nanotubes in the Koch Curve Fractal Method

et al. 2020

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Layered carbon fiber composites (CFC) with enhanced shielding effectiveness (SE) were prepared with mixed fillers of carbon nanotubes (CNTs) and carbonyl iron powders (CIPs) in the form of a Koch curve fractal. In the layered composite structure, glass fiber (GF) cloth was used in the wave–transmissive layer (WTL), and the carbon fiber (CF) cloth was used in the supporting layer (SL). Between WTL and SL, CNTs and CIPs were distributed in epoxy resin in the form of a Koch curve fractal to act as an absorbing layer (AL), and copper foil was used as a reflective layer (RL) and bonded at the bottom of the whole composites. The layered structure design and excellent interlayer interface integration obviously improved the SE performance of the CFC. The SE of different samples was investigated, and the results show that, with the increase in the number (n) of Koch curve fractals, the SE of the samples enhanced in the low frequency scope (1–5 GHz). The sample with n = 2 has the highest SE value of 73.8 dB at 2.3 GHz. The shielding performance of the fractal sample filled by CNTs and CIPs simultaneously has a comprehensive improvement in the whole scope of 1–18 GHz, especially for the sample with n = 2. The cumulative bandwidth value of the SE exceeding 55 dB is about 14.3 GHz, accounting for 85% of the whole frequency scope, indicating the composite fabricated in this paper is an electromagnetic shielding material with great prospect.

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Section: Resultsmentioning

confidence: 82%

Enhanced Shielding Performance of Layered Carbon Fiber Composites Filled with Carbonyl Iron and Carbon Nanotubes in the Koch Curve Fractal Method

et al. 2020

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“…After washing CIP−GO−PANI with deionized water and alcohol twice to remove residual hydrochloric acid and putting it in a vacuum drying oven for drying, the composite was mixed evenly with epoxy resin and a curing agent in a beaker, heated and stirred, and then taken out while curing. After curing, the mixture was poured into a three−roll machine for grinding and then mixed with paraffin in a mass ratio of 3:7, making coaxial specimens with different thicknesses with an inner diameter of 3 mm and an outer diameter of 7 mm [25,26]. A vector network analyzer was used to test the electromagnetic parameters and wave absorbing performance of the material in the range of 2-18 GHz.…”

Section: Analysis Of Electromagnetic Parametersmentioning

confidence: 99%

Preparation and Characterization of Graphene Oxide/Polyaniline/Carbonyl Iron Nanocomposites

Huang

2022

Materials

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Nano coatings for anti−corrosion and electromagnetic wave absorbing can simultaneously implement the functions of assimilating electromagnetic waves and reducing the corrosion of materials caused by corrosive environments, such as seawater. In this work, a composite material for both electromagnetic wave absorption and anti−corrosion was prepared by an in−situ chemical oxidation and surface coating method using carbonyl iron powder (CIP), graphene oxide (GO) and aniline (AN). The synthesized composite material was characterized by scanning electron microscopy (SEM), infrared spectroscopy (FT−IR) and XRD. The carbonyl iron powder−graphene oxide−polyaniline (CIP−GO−PANI) composite material was used as the functional filler, and the epoxy resin was the matrix body for preparing the anticorrosive wave−absorbing coating. The results show that CIP had strong wave−absorbing properties, and the anti−corrosion property was greatly enhanced after being coated by GO−PANI.

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“…Corrosive wear becomes more severe in oxygen-rich splash zone (Melchers et al , 2007), the total mass loss in the corrosive wear process is greater than that of corrosion and wear alone (López et al , 2015; López–Ortega et al , 2018), which decreased the mechanical properties such as strength, ductility and impact strength to loss of material and ultimate failure (Popoola et al , 2013). To save the maintenance and replacement costs, coating technologies are widely used to protect from corrosion and wear, including electroless plating (Guo et al , 2016; Wang et al , 2015), thermal spraying (Fenga1 et al , 2020; Chen et al , 2020). among them, arc spraying (AS) has always been the focus of thermal spraying research studies, which provides many benefits over other coating techniques.…”

Section: Introductionmentioning

confidence: 99%

Corrosive wear and electrochemical corrosion performances of arc sprayed Al coating in 3.5% NaCl solution

Huang

Dejun

2021

ACMM

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Purpose The purpose of this paper is to investigate the effects of load and speed on the corrosive wear performance of Al coating in 3.5% NaCl solution, which provided an experimental reference for the anti-corrosion engineering on offshore platforms. Design/methodology/approach A layer of Al coating was prepared on S355 steel using an arc spraying. The corrosive wear test was carried out with CFT–1 type surface property tester. The effects of load and speed on the corrosive wear performance of Al coating were investigated and the wear mechanism was also discussed. The electrochemical tests were conducted using a CHI660E type electrochemical workstation, the anti-corrosion mechanism was analyzed. Findings The average coefficient of frictions (COFs) of Al coating under loads of 1.5, 2.5 and 3.5 N are 0.745, 0.847 and 0.423, the wear mechanism is abrasive wear. The average COFs of Al coating at the speeds of 200, 400 and 600 rpm are 0.745, 0.878 and 0.617, respectively, the wear mechanism at the speeds of 200 and 400 rpm are abrasive wear, while that at the speed of 600 rpm is abrasive wear and fatigue wear. The anti-corrosion mechanism is the isolation of Cl– corrosion and cathodic protection of sacrificial anode. Originality/value This paper mainly studied corrosive wear and electrochemical corrosion performances of Al coating. This study hereby confirms that this manuscript is the original work and has not been published nor has it been submitted simultaneously elsewhere. This paper further confirms that all authors have checked the manuscript and have agreed to the submission.

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Enhanced microwave absorbing properties and heat resistance of carbonyl iron by electroless plating Co

Cited by 31 publications

References 17 publications

Enhanced Shielding Performance of Layered Carbon Fiber Composites Filled with Carbonyl Iron and Carbon Nanotubes in the Koch Curve Fractal Method

Enhanced Shielding Performance of Layered Carbon Fiber Composites Filled with Carbonyl Iron and Carbon Nanotubes in the Koch Curve Fractal Method

Preparation and Characterization of Graphene Oxide/Polyaniline/Carbonyl Iron Nanocomposites

Corrosive wear and electrochemical corrosion performances of arc sprayed Al coating in 3.5% NaCl solution

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