Mechanical and Electromagnetic Interference Shielding Behavior of C/SiC Composite Containing Ti₃SiC₂

In order to obtain the composites with the integration of structural and functional properties, Ti₃SiC₂ is introduced into C/SiC due to its excellent damage tolerance and electromagnetic interference (EMI) shielding properties. C/SiC–Ti₃SiC₂ has the lower tensile strength, while the higher compressive strength than C/SiC. The penetration energy of C/SiC–Ti₃SiC₂ in the impact experiment is improved at least three times than that of C/SiC, resulting from the improved damage tolerance. With the introduction of Ti₃SiC₂, the EMI shielding effectiveness increases from 31 to 41 dB in X-band (8.2 to 12.8 GHz) due to the increase of electrical conductivity. C/SiC–Ti₃SiC₂ reveals the great potential as structural and functional materials based on the multi-functional properties.