Preparation and the electromagnetic interference shielding in the X-band of carbon foams with Ni-Zn ferrite additive

被引：34

作者：

Liu, Heguang ^{[1
]}

Wu, Jinsong ^{[2
]}

Zhuang, Qiang ^{[3
]}

Dang, Alei ^{[1
]}

Li, Tiehu ^{[1
]}

Zhao, Tingkai ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Mat Sci & Engn, Xian 710072, Peoples R China

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[3] Northwestern Polytech Univ, Sch Nat & Appl Sci, Shaanxi Key Lab Macromol Sci & Technol, Xian 710072, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 16期

基金：

中国国家自然科学基金;

关键词：

Carbon foam; Ni-Zn ferrite; Electromagnetic interference shielding; X-band; MICROWAVE ABSORBING PROPERTIES; COMPOSITES; NANOCOMPOSITES; NANOPARTICLES; OXIDE;

D O I：

10.1016/j.jeurceramsoc.2016.06.017

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The composite of carbon foam with Ni-Zn ferrite as additive has been developed via foaming and carbonization process for electromagnetic interference shielding, using coal tar pitch as precursor and Ni-Zn ferrite as an additive. It was observed that the shielding effectiveness (SE) over the X-band frequency is enhanced along with the increase of Ni-Zn ferrite additive amount. The carbon foam with 15 wt% Ni-Zn ferrite shows a SE of 42 dB, which has a promising application prospect. The electromagnetic interference shielding mechanism of carbon foam with different amount of Ni-Zn ferrite additive is discussed in the work. An absorption-dominant mechanism, which is mainly associated with the magnetic property determined by the amount of Ni-Zn ferrite additive, has been revealed. It is also found that the mechanical strength of resultant carbon foams increases firstly and then decreases with the continuously increased amount of Ni-Zn ferrite additive. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：3939 / 3946

页数：8

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