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

doi:10.1016/j.matlet.2020.128667

CORC > 金属研究所 > 中国科学院金属研究所

	Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states
	Dai, Bushi 2; Li, Jinyang 2; Wang, Weizhen 2; Liu, Xiaoguang 1; Qi, Yujie 2; Qi, Yang 2,3
刊名	MATERIALS LETTERS
	2020-12-15
卷号	281 页码:4
关键词	Carbon materials Skin effect Dielectric loss Nanocrystalline materials
ISSN号	0167-577X
DOI	10.1016/j.matlet.2020.128667
通讯作者	Qi, Yang(qiyang@imp.neu.edu.cn)
英文摘要	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.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000581134200057
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141274]
专题	金属研究所_中国科学院金属研究所
通讯作者	Qi, Yang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Inst Mat Phys & Chem, Shenyang 110819, 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.