Synthesis of yolk-shell structured carbonyl iron@void@nitrogen doped carbon for enhanced microwave absorption performance

2020 ◽  
Vol 812 ◽  
pp. 152083 ◽  
Author(s):  
Weiyong Dai ◽  
Fu Chen ◽  
Hui Luo ◽  
Ying Xiong ◽  
Xian Wang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbonyl Iron ◽  
Nitrogen Doped ◽  
Absorption Performance ◽  
Nitrogen Doped Carbon ◽  
Microwave Absorption Performance

Nitrogen-doped and Fe-filled CNTs/NiCo2O4 porous sponge with tunable microwave absorption performance

Carbon ◽  
2019 ◽  
Vol 153 ◽  
pp. 737-744 ◽  
Author(s):  
Qingmei Hu ◽  
Rongliang Yang ◽  
Zichao Mo ◽  
Dongwei Lu ◽  
Leilei Yang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Nitrogen Doped ◽  
Tunable Microwave ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals

2022 ◽  
Vol 572 ◽  
pp. 151320
Author(s):  
Xianyu Jiang ◽  
Weihong Wan ◽  
Bo Wang ◽  
Linbo Zhang ◽  
Liangjun Yin ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbonyl Iron ◽  
Absorption Performance ◽  
Microwave Absorption Performance

scholarly journals Effect of Reaction Time on Microwave Absorption Properties of Fe3O4 Hollow Spheres Synthesized via Ostwald Ripening

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Absorption ◽  
Ostwald Ripening ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Structures ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Hollow magnetic structures have great potential to be used in the microwave absorbing field. Herein, Fe3O4 hollow spheres with different levels of hollowness were synthesized by the hydrothermal method under Ostwald ripening effect. In addition to their microstructures, the microwave absorption properties of such spheres were investigated. The results show that the grain size and hollowness of Fe3O4 hollow spheres both increase as the reaction time increases. With increasing hollowness, the attenuation ability of electromagnetic wave of Fe3O4 spheres increases first and then decreases, finally increases sharply after the spheres break down. Samples with strong attenuation ability can achieve good impedance matching, which it does preferentially as the absorber thickness increases. Fe3O4 hollow spheres show the best microwave absorption performance when the reaction time is 24 h. The minimum reflection loss (RL (min)) can reach −40 dB, while the thickness is only 3.2 mm.

Sign in / Sign up

Export Citation Format

Share Document