Abstract
Uniform 1D/2D amorphous carbon nanostructures were discovered to spontaneously form on the fracture surfaces of carbon nanotube-concentrated ceramic composites upon their static fracture. The factors potentially responsible for the formation, thickness and detectability of such nanosized amorphous carbon structures are discussed. Ultimately, a mechanism for their formation upon fracture is proposed. The present discovery could help to avoid misinterpretation of the carbon/matrix interfacial strength, reactions and the composites reinforcing mechanism especially in carbon-concentrated composite systems. Furthermore, this is the first report on the formation of amorphous carbon nanostructures upon fracture of a carbon-based composite material.
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