Optimization of the ceramization process for the production of three-dimensional biomorphic porous SiC ceramics by chemical vapor infiltration (CVI)

2006 ◽  
Vol 26 (12) ◽  
pp. 2381-2387 ◽  
Author(s):  
Daniela Almeida Streitwieser ◽  
Nadja Popovska ◽  
Helmut Gerhard
Keyword(s):  
Three Dimensional ◽  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Sic Ceramics ◽  
Porous Sic ◽  
Vapor Infiltration

Complex Permittivity of 3D Textile SiC/C/SiC Composites Fabricated by Chemical Vapor Infiltration at X-Band Frequency

2008 ◽  
Vol 368-372 ◽  
pp. 1028-1030 ◽  
Author(s):  
Dong Lin Zhao ◽  
Hong Feng Yin ◽  
Yong Dong Xu ◽  
Fa Luo ◽  
Wan Cheng Zhou
Keyword(s):  
Complex Permittivity ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Pyrolytic Carbon ◽  
Chemical Vapor Infiltration ◽  
Band Frequency ◽  
Sic Fiber ◽  
X Band ◽  
Sic Composites ◽  
Vapor Infiltration

Three-dimensional textile SiC fiber reinforced SiC composites with pyrolytic carbon interfacial layer (3D-SiC/C/SiC) were fabricated by chemical vapor infiltration. The microstructure and complex permittivity of the 3D textile SiC/C/SiC composites were investigated. The flexural strength of the 3D textile SiC/C/SiC composites was 860 MPa at room temperature. The real part (ε′) and imaginary part (ε″) of the complex permittivity of the 3D-SiC/C/SiC composites are 9.11~10.03 and 4.11~4.49, respectively at the X-band frequency. The 3D-SiC/C/SiC composites would be a good candidate for structural microwave absorbing material.

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