期刊
APPLIED SURFACE SCIENCE
卷 257, 期 17, 页码 7678-7683出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2011.04.007
关键词
Carbon fibers; Cobalt oxides; Thermal oxidation; Magnetic properties; Microwave absorbing materials
类别
资金
- National Talent Training Foundation of Lanzhou University in Basic Physics [502-041104]
Cobalt oxides/carbon fibers (CoOx/CFs) composites were synthesized by thermal oxidation of cobalt coated carbon fibers (Co/CFs). The scanning electron microscopy images and X-ray diffraction pattern indicate that the layers are about 0.7 mu m and composed of Co3O4 and CoO (CoOx), the preferred condition for preparation of CoOx/CFs composites is to anneal Co/CFs precursors at 350 degrees C for 3 h in air. The coercivity, saturation magnetization and residual magnetization of the CoOx/CFs composites are 464.8 Oe, 10.62 emu/g and 2.21 emu/g, respectively. The reflectivity of cobalt oxides coated carbon fibers (1.11-5.12 mm in thickness) is less than -10 dB over the working frequency range of 4.04-18.00 GHz and less than -20 dB over 11.54-14.77 GHz. The lowest reflectivity is -45.16 dB at 13.41 GHz when the thickness is 1.50 mm. (C) 2011 Elsevier B. V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据