Enhanced microwave absorption properties under synergism of 0-D TiB2 particles and 1-D TiB2 fibers prepared by carbothermal process

Titanium boride (TiB 2 ) particles and fibers were synthesized by the carbothermal method with different calcination temperatures and time. Subsequently, the effects of calcination temperatures and time on microstructure and the yield of TiB 2 fibers were investigated. Further, the dielectric and mi...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-11, Vol.31 (21), p.18307-18319
Main Authors: Liu, Xiongzhang, Luo, Hui, Li, Yingrui, Chen, Fu, Wang, Xian, Gong, Rongzhou
Format: Article
Language:English
Subjects:
Carbon black
Characterization and Evaluation of Materials
Chemistry and Materials Science
Dielectric properties
Fibers
Graphite
Investigations
Materials Science
Microwave absorption
Optical and Electronic Materials
Paraffins
Roasting
Thickness
Titanium diboride
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Summary:Titanium boride (TiB 2 ) particles and fibers were synthesized by the carbothermal method with different calcination temperatures and time. Subsequently, the effects of calcination temperatures and time on microstructure and the yield of TiB 2 fibers were investigated. Further, the dielectric and microwave absorption (MA) properties of TiB 2 /paraffin composites within 2–18 GHz were discussed. As a result, the yield of TiB 2 fibers reached a maximum at 1400 °C for 180 min. The content of TiB 2 was directly proportional to permittivity. The sample containing 80 wt % TiB 2 particles and fibers indicated that the minimum reflection loss ( RL min ) attained − 46.5 dB at 11.6 GHz when the thickness was 1.45 mm and the effective absorption bandwidth (EAB) was 4.64 GHz ( RL
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-04076-1