Strengthening mechanisms in carbon nanotube reinforced bioglass composites

Abstract

Carbon nanotube reinforced bioglass composites have been successfully synthesized by two comparative sintering techniques, i.e., spark plasma sintering (SPS) and conventional compaction and sinteirng. The composites show improved mechanical properties, with SPS technique substantially better than conventional compact and sintering approach. Using SPS, compared with the 45S5Bioglass matrix, the maximum flexural strength and fracture toughness increased by 159% and 105%, respectively. Enhanced strength and toughness are attributed to the interfacial bonding and bridging effects between the carbon nanotubes and bioglass powders during crack propagations.

Keywords

45S5Bioglass / multi-wall carbon nanotubes / biocomposite / mechanical properties / sintering

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Acknowledgments

Jing ZHANG thanks the support from the National Science Foundation (Grant No. 0723244).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg