Ceramic nanocomposites reinforced with a high volume fraction of carbon nanotubes
Kun Yang , Laifei Cheng , Linan An , Gang Shao
Journal of Wuhan University of Technology Materials Science Edition ›› 2017, Vol. 32 ›› Issue (1) : 47 -50.
Ceramic nanocomposites reinforced with a high volume fraction of carbon nanotubes
Multi-walled carbon nanotubes (MWNTs) were incorporated into precursor-derived ceramics made from a polysilazane. A ceramic nanocomposite reinforced with about 35 vol% of carbon nanotubes (CNTs) was fabricated by infiltrating CNT-preform with liquid-phased polymeric precursor followed by pyrolysis. The nanocomposite has a dense structure without micro-cracks. The results reveal that the nanocomposite has lower indentation hardness but higher fracture energy than non-reinforced ceramic from the microindentation tests results. The effect of the CNTs on the mechanical properties of the nanocomposite should be discussed accordingly.
carbon nanotubes / microindentation / polymer-derived ceramic / SiCN
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