Achieving high temperature broadband electromagnetic reflection reduction via Al2O3 / FeCrAl refractory composite coating

doi:10.1016/j.ceramint.2022.01.214

IMR OpenIR

	Achieving high temperature broadband electromagnetic reflection reduction via Al2O3 / FeCrAl refractory composite coating
	Zhao, Shixin 1; Ma, Hua 1; Li, Xiaoquan 2; Sui, Sai 1; Shao, Tengqiang 1; Wang, Jun 1; Feng, Bo 1; Wei, Dongbing 1; Li, Qiaolei 3,4; Qu, Shaobo 1
通讯作者	Ma, Hua(mahuarr@126.com) ; Sui, Sai(suisai_mail@foxmail.com)
	2022-05-01
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	48 期号:9 页码:13340-13347
摘要	Absorbing materials have gained great applications for the capability of electromagnetic (EM) reflection reduction. So far, it is still very challenging to simultaneously achieve high-temperature resistance and broad working band in one design. This work reports a composite coating to realize this goal by using refractory Al2O3 coating and high-temperature conductive FeCrAl by atmospheric plasma spraying (APS). The reflection reduction mechanism is the phase cancellation instead of absorption. By spraying the FeCrAl structure on the surface of Al2O3 coating, it can behave as resonators to produce a phase difference. Here, with a thin thickness of 1.7 mm, the composite coating shows stable wideband EM reflection reduction from room temperature up to 700 degrees C, which originates from the excellent conductivity of FeCrAl and the steady dielectric property of Al2O3. In addition, a protective layer is employed to isolate the contact between the structural layer and the outside high-temperature environment, which prevents the conductive structure from corrosion and greatly enhances the practicability and feasibility for daily maintaining. Sample characterizations show that these layers are prepared of low porosity and closely bonded to form the composite coating. The EDX mapping scan results and micro-structure analysis demonstrate that the composite coating can exhibit excellent stability at high temperatures. Meanwhile, XRD results at different temperatures indicate the phase structure of Al2O3 coating is not damaged. This study provides a route to achieve temperature insensitive EM reflection reduction over a wide frequency range and enlighten a promising future of this material system.
关键词	Electromagnetic reflection reduction Functional composite coating Insensitive to temperature FeCrAl
资助者	Graduate Scientific Research Foundation of Department of Basic Sciences of Air Force Engineering University, National Natural Science Foundation of China
DOI	10.1016/j.ceramint.2022.01.214
收录类别	SCI
语种	英语
资助项目	Graduate Scientific Research Foundation of Department of Basic Sciences of Air Force Engineering University, National Natural Science Foundation of China[61671467]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000790277700003
出版者	ELSEVIER SCI LTD
引用统计	被引频次：3[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/321006/173963
专题	中国科学院金属研究所
通讯作者	Ma, Hua; Sui, Sai
作者单位	1.AF Engn Univ, Dept Basic Sci, Xi'an 710051, Peoples R China 2.AF Engn Univ, Air & Missile Def Coll, Xi'an 710051, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Shixin,Ma, Hua,Li, Xiaoquan,et al. Achieving high temperature broadband electromagnetic reflection reduction via Al2O3 / FeCrAl refractory composite coating[J]. CERAMICS INTERNATIONAL,2022,48(9):13340-13347.
APA	Zhao, Shixin.,Ma, Hua.,Li, Xiaoquan.,Sui, Sai.,Shao, Tengqiang.,...&Qu, Shaobo.(2022).Achieving high temperature broadband electromagnetic reflection reduction via Al2O3 / FeCrAl refractory composite coating.CERAMICS INTERNATIONAL,48(9),13340-13347.
MLA	Zhao, Shixin,et al."Achieving high temperature broadband electromagnetic reflection reduction via Al2O3 / FeCrAl refractory composite coating".CERAMICS INTERNATIONAL 48.9(2022):13340-13347.