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For the Ni-decorated CNTs/Cu f/u00ae Cu, the broader interface transition area between CNTs and copper was established, and a result of increased electrical conductivity, tensile strength, and elongation was achieved.
Source link: https://europepmc.org/article/MED/35893516
Carbon fiber fabric-reinforced phenolic resin composites are widely used as thermal protection components in hypersonic machines and capsules. Compared to composites with B 4 C, the residual weight percentage of composites with 15 phr B 4 C has increased from 23. 03% to 32. 9 percent. In addition, MoSi 2 and B 4 C particles had a positive effect on the oxidation of carbon fibers in the composites. The diameter of the as-received carbon fiber was reduced by 31. 8 percent and 6. 1 percent, respectively, after treatment at 1400 b0C, while the diameter of the carbon fiber in BP-0 and BP-15 narrowed by 15. 12% and 6. 4 percent. At elevated temperatures, the liquid B 2 O 3 from B 4 C and MoSi 2 -derived complex-phase ceramics acted as an oxygen barrier, effectively eliminating the carbon fibers' oxidation degree.
Source link: https://europepmc.org/article/MED/35890560
For the first time by infiltrating an A413 aluminum alloy in carbon fiber weaved using high-pressure die casting, aluminum matrix composites reinforced with carbon fiber were produced for the first time. At 680 °C, the HPDC approved complete wetting of the carbon fibers and infiltration of the aluminum alloy in the fibers meshes using aluminum at 680 °C. u00b0C During manufacturing, there was no degradation of the carbon fibers by their reaction with molten aluminum, and a refinement of the microstructure in the vicinity of the carbon fibers was observed, but due to the heat dissipation effect of the carbon fibers, the carbon fiber during processing was not affected. The load transition from the alloy to the carbon fibers caused a 10% increase in Young's modulus, a 10% increase in yield strength, and a 25 percent increase in tensile strength.
Source link: https://europepmc.org/article/MED/35591731
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