Mechanical properties of simultaneously synthesized and consolidated carbon nanofiber (CNF)-dispersed SiC composites by pulsed electric-current pressure sintering

Hot pressed and spark plasma sintered zirconia/carbon nanofiber composites

“…They found an improvement in the fracture toughness of approximately 13% with a volume fraction of CNFs of 2.5 vol.% but the hardness and bending strength decreased with increasing volume fraction of CNFs. Hirota et al 20 synthesized and consolidated CNF reinforced SiC from a mixture of Si, amorphous C and B powders and CNFs using SPS processing. For the composites with 5-15 vol.% of CNFs they achieved 96% of theoretical density, and for the system with 10 vol.% of CNFs very high mechanical properties: bending strength of 700 MPa, hardness of 26 GPa and fracture toughness of 5.5 MPa m 0.5 .…”

“…Only in the last few years publications have appeared that illustrate the positive effect of carbon nanofibers as reinforcing elements in alumina, silicon carbide and hydroxyapatite based composites. [19][20][21] Zirconia (3Y-TZP) is a material extensively used for many structural applications due to its good mechanical properties. Zirconia and/or zirconia based composites are interesting multifunctional materials for applications such as solid-oxide fuel cells, oxygen sensors and ceramic membranes because of their good ionic conductivity, high-temperature stability, high electrical breakdown field and large bandgap energy.…”

Effect of carbon nanofibers (CNFs) content on thermal and mechanical properties of CNFs/SiC nanocomposites

“…(graphitized CNFs conductivity: 1 Â 10 6 S/m), are drawing significant attention as nanoscale reinforcement for polymers, metal matrix composites and ceramic matrix composites [19][20][21][22]. However, the researches for thermal properties of the ceramic-CNFs composites have been rarely reported.…”

Graphene Reinforced Silicon Carbide Nanocomposites: Processing and Properties

“…Moreover, this variation also depends on the processing route that was used. In literature, various allotropes of carbon such as fiber or nanotube are considered as a soft phase [33] and considered a reason for decrease in hardness of the composites. Recently, Kim reported the use of rule of mixture for estimating the hardness of a composite with a soft and a hard phase as shown below [34].…”