TY - JOUR
T1 - Dielectric and microwave absorption properties of FexCoyP-loaded porous Al2O3 composites
AU - Zhou, Liang
AU - Liu, Xinbao
AU - Luo, Fa
AU - Yu, Jiaojiao
AU - Zhang, Dengpo
AU - Wang, Zhenjun
AU - Jia, Hongyao
AU - Wang, Hongbo
N1 - Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.
PY - 2023/9/15
Y1 - 2023/9/15
N2 - 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.
AB - 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.
KW - Complex permeability
KW - Complex permittivity
KW - Microwave absorption
KW - Porous AlO ceramic
KW - Transition metal phosphides
UR - http://www.scopus.com/inward/record.url?scp=85164391605&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2023.06.304
DO - 10.1016/j.ceramint.2023.06.304
M3 - 文章
AN - SCOPUS:85164391605
SN - 0272-8842
VL - 49
SP - 30417
EP - 30423
JO - Ceramics International
JF - Ceramics International
IS - 18
ER -