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- Title
Investigation on mechanism and microwave absorption properties of Ti<sub>3</sub>SiC<sub>2</sub>/nano-Cu powders.
- Authors
Liu, Yi; Xu, Yang; Su, Xiaolei; He, Xinhai; Xu, Jie; Qu, Yinhu; Wang, Junbo
- Abstract
In this work, Ti3SiC2/nano-Cu powders were synthesized by two different routes: mechanical ball-milling and electroless-plating process. The phase composition was identified by XRD and the microstructure was observed by SEM. Both the real and imaginary parts of complex permittivity for Ti3SiC2/nano-Cu powders prepared by electroless-plating process are higher because of the uniformly dispersing nano-Cu particles. In addition, the influences of concentration on the dielectric and microwave absorption properties were also investigated. As the content of Ti3SiC2/nano-Cu rises from 40 to 70 wt%, the real part of complex permittivity increases from 8.81 to 7.37 to 24.73-20.24, while the imaginary part enhances from 0.78-1.65 to 8.02-7.71 in the frequency range of 8.2-12.4 GHz. The most favorable absorption performance is obtained for the Ti3SiC2/nano-Cu/paraffin mixture containing 60 wt% filler with a thickness of 1.8 mm. The effective absorption bandwidth below − 10 dB is obtained in 9.2-12.2 GHz with a minimum reflection loss of − 20.42 dB at 10.88 GHz.
- Subjects
METAL powders; TITANIUM powder; NANOPARTICLE synthesis; ELECTROLESS plating; X-ray diffraction; MICROSTRUCTURE; PERMITTIVITY measurement
- Publication
Applied Physics A: Materials Science & Processing, 2019, Vol 125, Issue 1, p1
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-019-2381-7