Microstructure and properties of carbon nanotube/zirconia composite

Duszová, Annamária; Dusza, Ján; Tomášek, K.; Blugan, Gurdial; Kuebler, Jakob

doi:10.1016/j.jeurceramsoc.2007.09.011

Cited by 116 publications

(75 citation statements)

References 17 publications

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“…Generally speaking, the carbon black, which was used for reference reasons, is less efficient, while larger CNFs or higher amounts of SWNT+MWNT form more conductive networks (588 S/m for HP alumina-5%CNF, and 853 S/m for magnesium aluminate-12.2%CNT, respectively). Similar results were found recently for series of zirconia, alumina and silicon nitride based CMCs (Duszová et al, 2008b;Hvizdoš et al, 2011b). These results are summarized in Fig.…”

Section: Electrical Propertiessupporting

confidence: 91%

“…15), where amounts as low as 1 to 3 wt.% of carbon nanofibers were sufficient to increase the electrical conductivity from ~10 -12 S/m to 983± 200 S/m (hot pressed) or 813±273 S/m (SPSed), (Duszová et al, 2008b). In summary it can be concluded that thanks to their fibrous nature and intergranular distribution, very little amount of carbon nanofibers (only about 1-5 wt%, depending on the basic material microstructure) is sufficient for the percolation effect to take place.…”

Section: Electrical Propertiesmentioning

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: Electrical Propertiessupporting

confidence: 91%

Section: Electrical Propertiesmentioning

confidence: 99%

Carbon Nanofibers Reinforced Ceramic Matrix Composites

Hvizdoš¹,

Puchý²,

Duszová³

et al. 2011

Nanofibers - Production, Properties and Functional Applications

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“…This is primarily due to the lubricant nature of carbon nanofillers which is responsible for deeper penetration on the Vickers indenter during the indentation. These observations for the hardness of nanocomposites are in consistent with the studies conducted by different groups [3,7,[37][38]. It is interesting to note that there is no significant difference in hardness for the different types of nanocomposites.…”

Section: Resultssupporting

confidence: 90%

“…They have been widely researched for their addition in polymer [2], ceramic [3][4][5][6][7] and metal [8] nanocomposites owing to the outstanding mechanical, thermal, and electronic properties attributed to them. Composite materials, filled with carbon nanofillers, are being researched for emerging applications like energy, transportation, defence, automotive, aerospace, sporting goods, and infrastructure sectors [9].…”

Section: Introductionmentioning

confidence: 99%

Structural health monitoring capabilities in ceramic–carbon nanocomposites

Bhat

Daoush

2014

Ceramics International

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractA novel method for analysing structural health of alumina nanocomposites filled with graphene nanoplatelets (GNP), carbon nanotubes (CNTs) and carbon black nano-particles (CB) is presented. All nanocomposites were prepared using novel colloidal processing and then by Spark Plasma Sintering.Good homogeneous dispersion was observed for all carbon filled materials. Nanocomposite bars were indented to produce sub-surface damage. Change in electrical conductivities were analysed after indentation to understand structural damage. For correlating change in electrical conductivity and Page 2 of 15 indentation damage and understanding damage tolerance, mechanical properties were compared.Because of the systematically induced indentation damage, a sharp decrease of 86% was observed in the electrical conductivity of CNT nanocomposite as compared to 69% and 27% in the electrical conductivities of GNP nanocomposites and CB nanocomposites respectively. CNTs impart superior damage sensing capability in alumina nanocomposites, in comparison to GNP and CB, due to their fibrous nature, high aspect ratio and high electrical conductivity.

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“…While, a decrease in indentation K Ic was usually observed for concentrations higher than 2 wt% CNT [11][12][13][14][15] and explained by the poor dispersion of CNTs and the weak bonding between CNTs and zirconia matrix. Moreover, a decrease in K Ic was reported in 1.07 wt% CNF/CNT [16,17] as well as by adding a small fraction of 0.69 wt. % carbon nanofibers (CNF) [18].…”

Section: Recent Investigations Have Been Focused On the Addition Of Cmentioning

confidence: 92%