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A novel three dimensional (3D) printing method is developed to fabricate complex carbon/carbon (C/C) composite components. The C/C composites with the high mechanical performance are achieved by combining the selective laser sintering and the chemical vapor infiltration-thermal treatment process. The C/C composites with a maximum density of 1.5 g/cm3 and bending strength of 100 MPa are obtained. Complex...
High thermal conductivity carbon/carbon composites (HTC-C/Cs) have a high specific modulus and a low thermal expansion in addition to all the excellent properties of traditional C/C composites, which have been a research focus in recent years. 2D HTC-C/Cs were prepared by hot pressure molding, densification by precursor impregnation and pyrolysis, and then heat treatment at high temperatures, using...
Graphene oxide (GO) was employed as the sizing agent for continuous carbon fiber (CF) tows by an electrophoretic deposition and subsequent thermal annealing. The GO sheets were tightly coated and covalently attached to CF surfaces. Such reduced GO-deposited CFs exhibit a significant increase in surface roughness as compared to the bare CFs, which leads to an improvement in the interfacial shear strength...
A carbon block with ultra-high anisotropy was produced from a commercial graphite paper as the thermal reinforcement and a thermosetting phenolic resin as the binder. Hot-pressing at a maximum temperature of 200°C was used to densify and integrate the graphite paper stacks. It has been found that the graphite paper blocks have high thermal conductivities in the paper direction and low ones perpendicular...
A zirconium carbide (ZrC) protective coating was deposited on carbon/carbon (C/C) composites by atmospheric pressure chemical vapor deposition. The phase compositions, surface and cross-section microstructures, and anti-ablative properties of the coatings were investigated. Results show that the method is an effective route to prepare a dense and thick ZrC coating on C/C composites. The coating can...
Friction and wear properties of carbon/carbon (C/C) composites with a smooth laminar (SL), a medium textured rough laminar (RL) and a high textured RL pyrolytic carbon texture were investigated with a home-made laboratory scale dynamometer to simulate airplane normal landing (NL), over landing (OL) and rejected take-off (RTO) conditions. The morphology of worn surfaces at different braking levels...
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