Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states

doi:10.1016/j.matlet.2020.128667

IMR OpenIR

	Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states
	Dai, Bushi 1; Li, Jinyang 1; Wang, Weizhen 1; Liu, Xiaoguang 2; Qi, Yujie 1; Qi, Yang 1,3
通讯作者	Qi, Yang(qiyang@imp.neu.edu.cn)
	2020-12-15
发表期刊	MATERIALS LETTERS
ISSN	0167-577X
卷号	281 页码:4
摘要	The precursor was prepared by electrospinning method with Polyvinyl alcohol (PVA) as a raw material, and carbon fibers were obtained through pre-oxidation and carbonization process. The results of the experimental confirmed that different graphitization states can cause changes in microwave absorption characteristics. When the carbonization temperature was 650 degrees C, carbon fibers showed excellent microwave absorption characteristics with a minimum reflection loss value of -45.2 dB, under the effect of dielectric loss. When the carbonization temperature was 850 degrees C, carbon fibers showed excellent microwave absorption characteristics with a minimum reflection loss value of -44.4 dB, under the combined effect of eddy current loss and dielectric loss. The interface isomerization of amorphous carbon and graphitized carbon and the defects in amorphous carbon and graphitized carbon can be regarded as polarization centers, which leaded to dielectric loss. Moreover, in terms of structure, the skin effect occurred in the bridged carbon fibers which can cause eddy current loss. (C) 2020 Elsevier B.V. All rights reserved.
关键词	Carbon materials Skin effect Dielectric loss Nanocrystalline materials
DOI	10.1016/j.matlet.2020.128667
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000581134200057
出版者	ELSEVIER
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141275
专题	中国科学院金属研究所
通讯作者	Qi, Yang
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Inst Mat Phys & Chem, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Dai, Bushi,Li, Jinyang,Wang, Weizhen,et al. Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states[J]. MATERIALS LETTERS,2020,281:4.
APA	Dai, Bushi,Li, Jinyang,Wang, Weizhen,Liu, Xiaoguang,Qi, Yujie,&Qi, Yang.(2020).Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states.MATERIALS LETTERS,281,4.
MLA	Dai, Bushi,et al."Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states".MATERIALS LETTERS 281(2020):4.