Mechanical properties and electrical conductivity in a carbon nanotube reinforced silicon nitride composite

Kovalčíková, Alexandra; Balázsi, Cs.; Dusza, Ján; Tapasztó, Orsolya

doi:10.1016/j.ceramint.2011.07.038

Cited by 44 publications

(26 citation statements)

References 46 publications

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“…Most approaches tried to create a microstructure with reinforcing phases evenly dispersed in the matrix. The reinforcing phases included rod-like β-Si 3 N 4 [2][3], various particles or carbon structures such as carbon fibers, nanotubes [4][5] or most recently graphenes [6] or more precisely graphene nanoplatelets (GNP). By the virtue of its outstanding mechanical properties including high tensile strength and Young modulus graphene shows great promise as a nanofiller in composite materials [7].…”

Section: Introductionmentioning

confidence: 99%

Spark plasma sintering of Si₃N₄/multilayer graphene composites

et al. 2014

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Mulitlayer graphene reinforced silicon nitride composites were prepared by spark plasma sintering to investigate the effect of the graphene addition on mechanical properties. The composites contained multilayer graphene (MLG) in various (0, 1, 3 and 5 wt%) content. Significantly higher fracture toughness of 8.0 MPa m 1/2 was obtained at 1% MLG content, however, on further increasing the graphene content the toughness did not increase, but dropped to the value of the monolithic silicon nitride. The maximum hardness of 18.8 MPa was also obtained at 1% MLG, while at higher MLG contents it gradually decreased.

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Section: Introductionmentioning

confidence: 99%

Spark plasma sintering of Si₃N₄/multilayer graphene composites

et al. 2014

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“…However, the high machining cost of complex-shaped Si 3 N 4 ceramics components is one of the key barriers to allow its wide commercial applications. Thus, many researchers have introduced naturally electroconductive Ti-based compounds (TiN, TiC 0.5 N 0.5 , TiB 2 ) or carbon-containing materials (carbon nanofibers, carbon nanotube, graphene nanoplatelets) into Si 3 N 4 ceramics to improve the electrical conductivities, and thus readily for electric discharge machining (EDM) to achieve near-net shape manufacturing [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The change in Gibbs free energy of reaction as a function of temperature under 1 atm N 2 for Reactions (2), (4) and(5).…”

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confidence: 99%

Chemical reactivity of hot-pressed Si3N4–ZrB2 ceramics at 1500–1700 °C

Guo

et al. 2015

Journal of the European Ceramic Society

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“…In many papers, improvements of weak bonding between CNTs and matrix, dispersion of the CNTs in the matrix, degradation of the CNTs and densification of the composites are emphasized to enhance the mechanical properties, especially, fracture toughness. 16),21),23) 26) In our previous study, 27) 3 wt % carbon nanofibers (CNFs)/SiC composite showed 50% increase in the fracture toughness, compared with the monolithic SiC. The improved fracture toughness resulted from pullout and/or bridging of the CNFs bonded with SiC grains much more closely.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of carbon nanofibers with SiC by heating different SiO vapor sources in argon atmosphere

Yamakami

Yamaguchi

et al. 2014

J. Ceram. Soc. Japan

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In order to improve interfacial bonding strength between carbon nanofibers (CNFs) and SiC matrix in CNFs/SiC composites and to disperse CNFs uniformly in the matrix, SiC coating on surface of CNFs was performed in argon atmosphere in the temperature range of 1400 to 1800°C using SiO 2 , SiO, and mixture of Si and SiO 2 powders (Si/SiO 2 powder) as silicon sources, and the modification and dispersibility of the treated CNFs were investigated. ¢-SiC particles were deposited on the surface of the CNFs in all the specimens at 16001800°C. So more SiC was formed by heating CNFs with SiO powder at 1600°C. However, the formed SiC was oxidized at higher temperature, practically, at 1800°C. This oxidation was advanced more by using SiO 2 and Si/ SiO 2 powders as silicon sources and very fine carbon fibers were observed on the surface of CNFs. The dispersibilities of CNFs heated with Si/SiO 2 and SiO powders were superior to those of as-received CNFs, CNFs treated with NaClO 3 solution and CNFs heated with SiO 2 powder, which resulted from the advanced oxidation of CNFs and the silanol group (SiOH) on surface of formed SiC.

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Mechanical properties and electrical conductivity in a carbon nanotube reinforced silicon nitride composite

Cited by 44 publications

References 46 publications

Spark plasma sintering of Si₃N₄/multilayer graphene composites

Spark plasma sintering of Si₃N₄/multilayer graphene composites

Chemical reactivity of hot-pressed Si3N4–ZrB2 ceramics at 1500–1700 °C

Surface modification of carbon nanofibers with SiC by heating different SiO vapor sources in argon atmosphere

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Mechanical properties and electrical conductivity in a carbon nanotube reinforced silicon nitride composite

Cited by 44 publications

References 46 publications

Spark plasma sintering of Si3N4/multilayer graphene composites

Spark plasma sintering of Si3N4/multilayer graphene composites

Chemical reactivity of hot-pressed Si3N4–ZrB2 ceramics at 1500–1700 °C

Surface modification of carbon nanofibers with SiC by heating different SiO vapor sources in argon atmosphere

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Spark plasma sintering of Si₃N₄/multilayer graphene composites

Spark plasma sintering of Si₃N₄/multilayer graphene composites