Synthesis and microwave absorbing properties of FeCo alloy particles/graphite nanoflake composites

被引：103

作者：

Wang, Chen ^{[1
]}

Lv, Ruitao ^{[1
]}

Huang, Zhenghong ^{[1
]}

Kang, Feiyu ^{[1
,2
]}

Gu, Jialin ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Fine Ceram & New Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Shenzhen 518055, Guangdong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 02期

基金：

中国国家自然科学基金;

关键词：

FeCo alloy; Graphite nanoflake; Microwave absorption; Soft magnetism; Co-deposition; ABSORPTION PROPERTIES; FLAKE GRAPHITE; CO; NANOCOMPOSITES;

D O I：

10.1016/j.jallcom.2010.09.078

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Exfoliated graphite was processed into nano-sized flakes by jet milling, ultrasonication and acid treatments, and then FeCo alloy particles were uniformly deposited onto the surface of the prepared graphite nanoflakes (GNFs) by a co-deposition and subsequent annealing process in reducing atmosphere. The FeCo-GNFs composites demonstrate good soft magnetic performance and effective microwave absorption, especially in the lower frequency range. The strongest absorption reaches -30.6 dB at 7.4 GHz with a coating thickness of 2 mm. Furthermore, effective microwave absorption at different frequency bands can be acquired by adjusting the coating thicknesses and filling ratios of FeCo-GNFs absorber. Considering the low cost and high efficiency, the FeCo-GNFs composites have great potential as microwave absorber for practical applications. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：494 / 498

页数：5

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