The microwave absorption properties of carbon-encapsulated nickel nanoparticles/silicone resin flexible absorbing material

2016 ◽  
Vol 682 ◽  
pp. 138-143 ◽  
Author(s):  
Yingxin Huang ◽  
Haiyan Zhang ◽  
Guoxun Zeng ◽  
Zhenghui Li ◽  
Danfeng Zhang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Nickel Nanoparticles ◽  
Silicone Resin ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Absorbing Material

Development of Electroless Ni-P/NRAM Nanocomposite Powder with Enhanced Microwave Absorption Properties

2009 ◽  
Vol 67 ◽  
pp. 59-64 ◽  
Author(s):  
Rahul Sharma ◽  
Ramesh Chandra Agarwala ◽  
Vijaya Agarwala
Keyword(s):  
Electron Microscope ◽  
Microwave Absorption ◽  
Radiation Power ◽  
Nanocomposite Powder ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Radar Absorbing Material ◽  
Transmission Electron ◽  
Absorbing Material ◽  
Nanocomposite Powders

Nano radar absorbing material (NRAM) i.e. BaMe2Fe16O27 (Me2+=Fe2+) powder (10 nm) is coated with amorphous Ni-P nano layer (5-10 nm) by using electroless (EL) technology to develop EL Ni-P/NRAM nanocomposite powder. The experimental processes parameters and EL Ni-P bath composition were optimized to obtain the deposition. As-deposited nanocomposite powder was microwave annealed (MWA) with increasing radiation power from 160 to 760 watts for 5 minutes. The surface morphology, elemental contents, phase transformation and magnetic properties of NRAM powders were examined under field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) respectively. Maximum reflection loss (RL) 33.75 dB at 15.80 GHz for nanocomposite powder MWA at 760 watt was obtained the absorption range under −15 dB is from 13.76 to 16.77 GHz with 2 mm thickness layer in Ku Band. Excellent microwave absorption properties due to accurate electromagnetic (EM) match in the nanocomposite microstructure, a strong natural resonance and multipolarization. Such (Ni+ Ni3P)/NRAM nanocomposite powders may be attractive candidates for EM absorption.

Microwave absorption properties of the core/shell-type iron and nickel nanoparticles

2008 ◽  
Vol 320 (6) ◽  
pp. 1106-1111 ◽  
Author(s):  
B. Lu ◽  
X.L. Dong ◽  
H. Huang ◽  
X.F. Zhang ◽  
X.G. Zhu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Nickel Nanoparticles ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
The Core ◽  
Shell Type

Microwave Absorption Properties of BaFe12O19 Prepared in Different Temperature with Polyaniline Nanocomposites

2017 ◽  
Vol 1142 ◽  
pp. 211-215 ◽  
Author(s):  
Wang Jun Feng ◽  
Xing Zhao ◽  
Wen Qian Zheng ◽  
Jun Tao Gang ◽  
Yue Cao ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Reflection Loss ◽  
In Situ Polymerization ◽  
Sol Gel ◽  
Ftir Spectra ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Result Show ◽  
Absorbing Material

The BaFe12O19 nanoparticles was prepared by sol-gel method in different temperature (750°C,850°Cand 950°C), and then BaFe12O19/polyaniline nanocomposites was synthesized by in situ polymerization. The XRD, FTIR spectra, SEM and vector network analyzer were used to analyze the "" chemical component, morphology and microwave absorption property of the nanocomposites. The result show that BaFe12O19 can be generated at 750°C without any impurity ,and its size increased with increase of calcination temperature.BaFe12O19 nanoparticle was coated with polyaniline partially, and we can get it have interaction with polyaniline through FTIR spectra. While the ferrite calcined at 850°C,the thickness of the absorbing material is 4.5mm,the nanocomposites have the largest reflection loss of-17.6 dB at 6 GHz,and its reflection loss values less than−10 dB in the range of 5-7.4GHz.

Co/C nanoparticles with low graphitization degree: a high performance microwave-absorbing material

2016 ◽  
Vol 4 (8) ◽  
pp. 1727-1735 ◽  
Author(s):  
Tong Liu ◽  
Xiubo Xie ◽  
Yu Pang ◽  
Satoru Kobayashi
Keyword(s):  
Carbon Source ◽  
Microwave Absorption ◽  
High Performance ◽  
Arc Plasma ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Plasma Method ◽  
Graphitization Degree ◽  
Absorbing Material ◽  
Microwave Absorbing

Co/C nanoparticles with low graphitization degree that have been prepared by an arc plasma method using methane as the carbon source exhibit high microwave absorption properties.

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