Preparation and Microwave Absorption Properties of (Fe, Co, Ni, Cu, Zn)CrxOy High-Entropy Multiphase Ceramics

被引：0

作者：

Li D. ^{[1
]}

Yan Z. ^{[1
]}

Zhao B. ^{[1
]}

Guan L. ^{[1
]}

Fan B. ^{[2
]}

Wang H. ^{[2
]}

Zhang R. ^{[1
,2
,3
]}

机构：

[1] School of Material, Zhengzhou University of Aeronautics, Zhengzhou

[2] School of Material Science and Engineering, Zhengzhou University, Zhengzhou

[3] Luoyang Institute of Science and Technology, Luoyang

来源：

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2022年 / 50卷 / 06期

关键词：

Dielectric loss; Electromagnetic wave absorption property; High-entropy ceramics; Perovskite structure; Spinel structure;

D O I：

10.14062/j.issn.0454-5648.20211179

中图分类号：

学科分类号：

摘要：

Based on the in-depth study of high-entropy alloys, a concept of configuration entropy stable single phase is introduced into inorganic non-metallic materials, thus developing high-entropy ceramics. The advantage of high-entropy ceramics is the diversity of composition and structure, which makes them have an application potential as functional materials. In this paper, high-entropy multiphase ceramics with a spinel structure and a perovskite structure were synthesized by a simple solid-state sintering method. The phase composition, microstructure, element content and valence state, and electromagnetic wave absorption properties were investigated. The microwave absorption properties of high-entropy multiphase ceramics sintered at different temperatures were analyzed. The results show that the high-entropy multiphase ceramics can be prepared, and two crystal structures (i.e., spinel structure and perovskite structure) can be formed due to the high-entropy effect. At 1300℃, there exists a maximum dielectric constant. The high-entropy multiphase ceramics prepared have the optimum electromagnetic wave absorption performance when the frequency range is 8.2-12.4GHz. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.

引用

页码：1489 / 1498

页数：9

共 42 条

[1]

XIANG Huimin, XING Yan, DAI Fuzhi, Et al., High-entropy ceramics: present status, challenges, and a look forward, J Adv Ceram, 10, 3, pp. 385-441, (2021)

[2]

GAO Jiacheng, LI Rui, J Funct Mater, 7, pp. 1059-1061, (2008)

[3]

LU Yidi, ZHANG Xiaoyong, HOU Shuo, Et al., Rare Met Mat Eng, 50, 1, pp. 333-341, (2021)

[4]

CHANG Haitao, HUO Xiaofeng, LI Wanpeng, Et al., Rare Met Mat Eng, 49, 10, pp. 3633-3645, (2020)

[5]

WANG Xiaopeng, KONG Fantao, J Aeronaut Mater, 39, 6, pp. 1-19, (2019)

[6]

CAO Wenping, LI Weili, XU Dan, Et al., Enhanced electrocaloric effect in lead-free NBT-based ceramics, Ceram Int, 40, 7, pp. 9273-9278, (2014)

[7]

BAI Wangfeng, LI Lingyu, LI Wei, Et al., Phase diagrams and electromechanical strains in lead-free BNT-based ternary perovskite compounds, J Am Ceram Soc, 97, 11, pp. 3510-3518, (2014)

[8]

ROST C M, SACHET E, BORMAN T, Et al., Entropy-stabilized oxides, Nat Commun, 6, 1, (2015)

[9]

HONG Weichen, CHEN Fei, SHEN Qiang, Et al., Microstructural evolution and mechanical properties of (Mg, Co, Ni, Cu, Zn)O high-entropy ceramics, J Am Ceram Soc, 102, 4, pp. 2228-2237, (2019)

[10]

LI Fei, ZHOU Lin, LIU Jixuan, Et al., High-entropy pyrochlores with low thermal conductivity for thermal barrier coating materials, J Adv Ceram, 8, 4, pp. 576-582, (2019)

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