Dielectric and microwave absorption properties of FexCoyP-loaded porous Al2O3 composites

被引：13

作者：

Zhou, Liang ^{[1
]}

Liu, Xinbao ^{[1
]}

Luo, Fa ^{[2
]}

Yu, Jiaojiao ^{[1
]}

Zhang, Dengpo ^{[3
]}

Wang, Zhenjun ^{[1
]}

Jia, Hongyao ^{[1
]}

Wang, Hongbo ^{[1
]}

机构：

[1] Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[3] Qingdao Fengdong Heat Treatment Co Ltd, Qingdao 266108, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 18期

关键词：

Transition metal phosphides; Complex permittivity; Complex permeability; Microwave absorption; ELECTROMAGNETIC-WAVE ABSORPTION; CARBON; NANOPARTICLES; MORPHOLOGY; EFFICIENT; CERAMICS; NICOP;

D O I：

10.1016/j.ceramint.2023.06.304

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Transition-metal phosphides have been investigated for microwave absorption applications owing to their excellent conduction loss and magnetic property. In this study, novel composites comprised of porous Al2O3 matrix loaded with FexCoyP (FexCoyP/Al2O3) were prepared by vacuum impregnation, hydrothermal, and low -temperature phosphatizing methods. The experimental results show that FexCoyP is uniformly deposited on the surface of porous Al2O3 ceramic, and the FexCoyP transforms from needle-like to particle-like structures as the Fe/Co ratio increases from 1:3 to 3:1. The minimum reflection loss (RLmin) of FeCo3P/Al2O3 composite reaches-26.19 dB at 12.4 GHz with a matching thickness of 2.6 mm, and the maximum effective absorption bandwidth (EAB) achieves 4.2 GHz in the whole X-band at 3.2 mm thicknesses. This study confirmed that the porous FexCoyP/Al2O3 composites are potential candidates for microwave absorption applications, and their microwave absorption properties can be enhanced by adjusting the ratio of Fe to Co.

引用

页码：30417 / 30423

页数：7

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