Microstructure and Mechanical Properties of Laminated Buckypaper/SiC Composite

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The laminated Buckypaper/SiC composite was prepared by RF magnetron sputtering. For comparison, the monolithic SiC was also prepared in the present study. The microstructure and morphology of the prepared samples were characterized by SEM and XRD. The Young’s modulus, hardness and stiffness of the samples were investigated by nanoindentation testing. The results showed that the Buckypaper/SiC composite had an obviously multilayered microstructure at the nanoscale. Furthermore, the fracture toughness of the laminated Buckypaper/SiC composite could be improved by crack deflection and platelet pullout mechanisms. The laminated Buckypaper/SiC composite had higher Young’s modulus and stiffness than that of the monolithic SiC. However, its hardness was lower than that of monolithic SiC.

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147-151

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April 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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