Electromagnetic Wave Absorption and Shielding Performances and Mechanisms of a Porous Ti3AlC2/SiC Gradient Composite
Source abstract
Abstract
A porous Ti 3 AlC 2 /SiC gradient composite with highly interconnective pores and gradient variation of the Ti 3 AlC 2 content was prepared by the template-replication method. Electromagnetic wave absorption and shielding performances of the as-prepared composite were investigated by the waveguide method in the range of the X-band. It reveals that the complex permittivity and EMW shielding properties of the Ti 3 AlC 2 /SiC porous gradient composite increased with increasing sintering temperature from 800 to 1000 °C. Meanwhile, rather than SE R, SE A contributed to the EMW shielding effectiveness effectively. The porous composite sintered at 800 °C exhibited the lowest reflection loss of −42.87 dB, while that sintered at 900 °C exhibited the widest effective absorption bandwidth of 3.2 GHz. The porous Ti 3 AlC 2 /SiC gradient composite is a more ideal electromagnetic wave absorption and shielding material than the conventional SiC foam.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Material and Processing Technology, Beijing 100076, China
Funding
National Natural Science Foundation of China · Science and Technology on Advanced Functional Composites Laboratory
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