NDLI: Mechanical, Dielectric, and Microwave-Absorption Properties of Alumina Ceramic Containing Dispersed Ti$_{3}$SiC$

Content Provider	Springer Nature Link
Author	Liu, Yi Luo, Fa Su, Jinbu Zhou, Wancheng Zhu, Dongmei
Copyright Year	2015
Abstract	Dense Al$_{2}$O$_{3}$ ceramics containing dispersed Ti$_{3}$SiC$_{2}$ were fabricated by hot-pressed sintering. Effects of Ti$_{3}$SiC$_{2}$ content on the mechanical, dielectric, and microwave-absorption properties of the ceramics were investigated. The bulk density, flexural strength, and dielectric constant were enhanced by increasing the Ti$_{3}$SiC$_{2}$ content. The complex permittivity increased dramatically when the Ti$_{3}$SiC$_{2}$ content was above the percolation threshold. The dielectric performance of the ceramics at high temperatures was also studied. The results revealed increases in both the real and imaginary parts with increasing temperature. Ceramic 2.2 mm thick containing 10% (w/w) Ti$_{3}$SiC$_{2}$ had the optimum microwave-absorption properties. The absorption bandwidth below −5 dB was in the range 8.2–12.4 GHz with a minimum value of −20 dB at 9.56 GHz. Although the reflection loss increased with the increasing temperature, the ceramic still had favorable microwave-absorption properties throughout the X-band. This study contributes to the development of the microwave absorption materials for high-temperature application.
Starting Page	867
Ending Page	873
Page Count	7
File Format	PDF
ISSN	03615235
Journal	Journal of Electronic Materials
Volume Number	44
Issue Number	3
e-ISSN	1543186X
Language	English
Publisher	Springer US
Publisher Date	2015-01-09
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ti$_{3}$SiC$_{2}$–Al$_{2}$O$_{3}$ ceramics dielectric properties microwave absorption high-temperature application Optical and Electronic Materials Characterization and Evaluation of Materials Electronics and Microelectronics, Instrumentation Solid State Physics
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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