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Nanocrystalline diamond (NCD) is a promising material due to its extraordinary properties, such as ultrahigh strength and hardness. The effects of strain rate (ε˙) and annealing temperature (TA) on the tensile properties of a NCD sample were investigated using molecular dynamics (MD) simulations. The anisotropy ratio of the sample was used to indicate the anisotropic nature of a polycrystalline, and...
A macroscopic carbon nanofiber (CNF)/alumina composite was synthesized by extrusion casting. Its textural and mechanical properties, crystallinity, surface acidity and thermal stability were investigated using N 2 physisorption, scanning electron microscopy, temperature programmed desorption of NH 3 (NH 3 -TPD), X-ray diffraction and thermal gravimetric (TG) analysis. It was...
Pt nanoparticles with different mean sizes supported on carbon nanotubes were synthesized by microwave heating ethylene glycol solutions of platinum salt with different pH in present of CNTs as supports. TEM examinations showed that Pt particles become smaller and more uniform when the synthesis pH increased from 3.4 to 9.2. The mean particle size was 5.8, 5.2, 3.4 and 2.7nm when the synthesis pH...
Nanocomposites of carbon nanotubes (CNTs) with Sb and SnSb 0.5 particles were prepared by chemical reduction of SnCl 2 and SbCl 3 precursors in the presence of CNTs. SEM and TEM imaging showed that the Sb and SnSb 0.5 particles are uniformly deposited on the CNT exterior and in the CNT web. These CNT-metal composites are active anode materials for...
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