Development of CNT/Si3N4 composites with improved mechanical and electrical properties

Balázsi, Csaba; Fényi, Balazs; Hegman, Norbert; Kövér, Zsuzsanna; Wéber, Ferenc; Vértesy, Zófia; Kónya, Zoltán; Kiricsi, Imre; Biró, L. P.; Arató, Péter

doi:10.1016/j.compositesb.2006.02.006

Cited by 117 publications

(60 citation statements)

References 15 publications

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“…As mentioned in the previous section, the CNT/Si 3 N 4 prepared by Balázsi (Balázsi et al, 2006) had lower density (higher porosity) than the analogous reference sample. Consequently, the reinforcement processes (e.g.…”

Section: Mechanical Propertiesmentioning

confidence: 91%

“…Balázsi with co-workers (Balázsi et al, 2006) developed CNT containing Si 3 N 4 composites using hot isostatic pressing and compared them with the monolithic silicon nitride as well as b a www.intechopen.com with composites containing carbon black and graphite prepared by identical procedure. They produced a series of composites with 1, 3, and 5 wt% of MWCNTs.…”

Section: Microstructurementioning

confidence: 99%

See 1 more Smart Citation

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Hvizdoš¹,

Puchý²,

Duszová³

et al. 2011

Nanofibers - Production, Properties and Functional Applications

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Section: Mechanical Propertiesmentioning

confidence: 91%

Section: Microstructurementioning

confidence: 99%

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Hvizdoš¹,

Puchý²,

Duszová³

et al. 2011

Nanofibers - Production, Properties and Functional Applications

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“…The procedure of preparation of the experimental materials and their microstructures were investigated and described in detail elsewhere [9][10][11][12].…”

Section: Experimental Materialsmentioning

confidence: 99%

“…The Si 3 N 4 based composites were prepared using starting powder mixtures of the investigated materials as follows [11]: 90 wt.% Si 3 N 4 , 4 wt.% Al 2 O 3 , and 6 wt.% Y 2 O 3 . In addition the batches of multi-walled carbon nanotubes were added.…”

Section: Experimental Materialsmentioning

confidence: 99%

Tribological and electrical properties of ceramic matrix composites with carbon nanotubes

Hvizdoš

Puchý

Duszová

et al. 2012

Ceramics International

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“…Most previous studies on CNT-dispersed Si 3 N 4 ceramics focused on their mechanical properties and only a few papers reported their electrical conductivity. 9), 10) We succeeded in the fabrication of electrically conductive CNT-dispersed Si 3 N 4 ceramics using sintering aids for low-temperature densification. 11) We also reported the influence of the geometry of CNTs on their density and electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Effect of CNT quantity and sintering temperature on electrical and mechanical properties of CNT-dispersed Si3N4 ceramics

Yoshio

Tatami

Wakihara

et al. 2011

J. Ceram. Soc. Japan

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Electrically conductive carbon nanotube (CNT)-dispersed ceramics with high strength were fabricated by varying the CNT quantity and the firing temperature. We investigated the effect of these factors on density, electrical conductivity, bending strength, and microstructure of the developed ceramics. The relative density of the CNT dispersed Si 3 N 4 ceramics was higher than 90% except for the sample containing less than 1 wt % of CNTs and fired at a temperature of 1800°C. It was confirmed that CNTs exist in the samples with a higher density. The pullout length of CNTs on the fracture surface in samples fired at higher temperatures was shorter because of the degradation of the CNTs. By TEM observation, CNTs were found to exist in the grain boundary in the Si 3 N 4 ceramics, and their diameter was found to be almost the same as that of raw CNTs. Electrical conductivity appeared in the samples by adding CNTs more than 1 wt % though the sample by adding 0.5 wt % CNTs was insulator. The electrical conductivities of the samples increased with an increase in the firing temperature, which was explained by the grain growth of ¢-Si 3 N 4 . The bending strength of the samples with 1 wt % of CNTs was as high as that of samples without CNTs. Thus, CNT-dispersed Si 3 N 4 ceramics having both electrical conductivity and a higher bending strength were obtained by controlling the CNT quantity and the firing temperature.

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Development of CNT/Si3N4 composites with improved mechanical and electrical properties

Cited by 117 publications

References 15 publications

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Tribological and electrical properties of ceramic matrix composites with carbon nanotubes

Effect of CNT quantity and sintering temperature on electrical and mechanical properties of CNT-dispersed Si3N4 ceramics

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