Development of CNT-Silicon Nitrides with Improved Mechanical and Electrical Properties

Balázsi, Csaba; Wéber, Ferenc; Arató, Péter; Fényi, Balazs; Hegman, Norbert; Kiricsi, Imre; Vértesy, Zófia; Biró, László Péter

doi:10.4028/www.scientific.net/ast.45.1723

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…In composite applications, both the mechanical exfoliation and reduction from GO have been used successfully [ 89 , 90 , 91 , 92 , 93 , 94 ]. In the mechanical cleavage method, commercial graphite powder (Aldrich) has been milled intensively in high efficient attritor mill in the presence of ethanol for 10 h, then the produced GNPs were mixed with ceramic powder [ 89 ].…”

Section: Graphene Reinforced Ceramic Nanocompositesmentioning

confidence: 99%

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Recent Advances on Carbon Nanotubes and Graphene Reinforced Ceramics Nanocomposites

2015

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Ceramics suffer the curse of extreme brittleness and demand new design philosophies and novel concepts of manufacturing to overcome such intrinsic drawbacks, in order to take advantage of most of their excellent properties. This has been one of the foremost challenges for ceramic material experts. Tailoring the ceramics structures at nanometre level has been a leading research frontier; whilst upgrading via reinforcing ceramic matrices with nanomaterials including the latest carbon nanotubes (CNTs) and graphene has now become an eminent practice for advanced applications. Most recently, several new strategies have indeed improved the properties of the ceramics/CNT nanocomposites, such as by tuning with dopants, new dispersions routes and modified sintering methods. The utilisation of graphene in ceramic nanocomposites, either as a solo reinforcement or as a hybrid with CNTs, is the newest development. This article will summarise the recent advances, key difficulties and potential applications of the ceramics nanocomposites reinforced with CNTs and graphene.

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Section: Graphene Reinforced Ceramic Nanocompositesmentioning

confidence: 99%

“…Wet powder mixing are successful to disperse CNTs in ceramic matrixes [ 92 , 93 , 94 , 95 ], whilst for GNPs the choice of solvents are much wider than processing CNTs. Isopropyl alcohol NMP, DMF have all be used to mix with various ceramic matrices such as Al 2 O 3 , Si 3 N 4 , and ZrO 2 powders.…”

Section: Graphene Reinforced Ceramic Nanocompositesmentioning

confidence: 99%

Recent Advances on Carbon Nanotubes and Graphene Reinforced Ceramics Nanocomposites

2015

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Spark plasma sintered bioceramics – from transparent hydroxyapatite to graphene nanocomposites: a review

Han

Gao

Bajpai

et al. 2019

Advances in Applied Ceramics

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Low toughness and wear resistance have limited application of many bioceramics in biomedical applications requiring load bearing capability. Spark plasma sintering (SPS) has widened the envelope of processing conditions available to produce bioceramics with new microstructural architectures. SPS has enabled realisation of transparent hydroxyapatite (HA) by providing the means to consolidate fully dense nanostructured HA. Recently, low-dimensional carbon nanomaterials, including carbon nanotubes (CNTs) and graphene/graphene nanoplatelets (GNP) have gained increasing attention as reinforcements due to their providing superior mechanical properties, favourable biocompatibility, and large specific surface area. Processing of these nanocomposites is done using SPS in order to consolidate the ceramics to full density in short time periods, while retaining the structure and properties of the nanomaterial reinforcements. This review focuses on recent progress on GNP/CNT reinforced HA and alumina nanocomposites, including mechanical properties, tribological behaviour, processing conditions, and mechanisms. Biocompatibility of these promising bioceramics with various cells/tissues are discussed.

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DC conductivity of silicon nitride based carbon-ceramic composites

Fényi

Hegman

Wéber

et al. 2007

PAC

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The silicon nitride ceramics are usually known as strongly refractory and enduring materials and have typical electrically insulating properties. If the reinforcing phase of ceramic composite (that is mainly put in the material to improve mechanical properties) is a good electrical conductor, it is worth to investigate the composite in electrical aspect. In this work carbon nanotubes, black-carbon and graphite were added to the basic silicon nitride ceramic and the electrical conductivity of the prepared carbon-ceramic composites was determined. The conductivity of the ceramic composites with different type and concentration of the carbon additives was observed by applying four point DC resistance measurements. Insulator and conductor composites in a wide conductivity range can be produced depending on the type and quantity of the additives. The additive types as well as the sintering parameters have influence on the basic electrical properties of the conductor composites.

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Development of CNT-Silicon Nitrides with Improved Mechanical and Electrical Properties

Cited by 4 publications

References 14 publications

Recent Advances on Carbon Nanotubes and Graphene Reinforced Ceramics Nanocomposites

Recent Advances on Carbon Nanotubes and Graphene Reinforced Ceramics Nanocomposites

Spark plasma sintered bioceramics – from transparent hydroxyapatite to graphene nanocomposites: a review

DC conductivity of silicon nitride based carbon-ceramic composites

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